Physics Unit23: Light and Geometric Optics

1#

Reflection, refraction, and the formation of images by mirrors and lgrsgp;, m- p)u:4lbcrenses has been succe gmrpuc:, ;gl-4)pr sbssful described by the

A. wave model of light.

B. ray model of light.

C. particle model of light.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The angle of incidenceu(kx38 lbgu vsw5+x 8 bpcb+9l/f:dqw

A. must equal the angle of reflection.

B. is always less than the angle of reflection.

C. is always greater than the angle of reflection.

D. may be greater than, less than, or equal to the angle of reflection.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principle on which miv1os:og rj:y8 rrors work is

A. refraction.

B. polarization.

C. dispersion.

D. reflection.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A plane mirror forms*;pm8bkil u eur8+ho**ckz g)h-* emp an image that is

A. real and upright.

B. virtual and upright.

C. real and upside down.

D. virtual and upside down.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Plane mirrors produce images whizk :9tk m pa1;e t/si;bd20z0jiyeqg8 ch

A. are always smaller than the actual object.

B. are always larger than the actual object.

C. are always the same size as the actual object.

D. could be smaller, larger, or the same size as the actual object, depending on the placement of the object.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An image formed when the light rays do not //p5 c,zl k8h vqjnk.)9qnsmhactually pass through the image location, and would q c9)j kvn8/lqsh5km.,phz n/ not appear on paper or film placed at that location is referred to as

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An image formed when the light rat 5lh.jhau6gbf1 b*f1ys pass through the image location, and could apt5*j6bgbf.1ahhf u l1pear on paper or film placed at the that location is referred to as

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Is it possible to see a virtual imagebqbkpo cu *7: y)qj3ghp)*wr6h3 mv+wzam; 0p?

A. No, since the rays that seem to emanate from a virtual image do not in fact emanate from the image.

B. No, since virtual images do not really exist.

C. Yes, the rays that appear to emanate from a virtual image can be focused on the retina just like those from an illuminated object.

D. Yes, since almost everything we see is virtual because most things do not themselves give off light, but only reflect light coming from some other source.

E. Yes, but only indirectly in the sense that if the virtual image is formed on a sheet of photographic film, one could later look at the picture formed.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A spherical mirror on which reflection takes place on tut7;pfzked/bf 8 -j ht;*a2xjhe outer surface of the spherical shape is referred toxhpzt* f8-je7/ufb2 ;;kjda t as a

A. convex mirror.

B. concave mirror.

C. plane mirror.

D. double-sided mirror.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A spherical mirror on which reflection takes place on the inj dz3ech-yiub1sz *,9,8 twz/t -u xggner surface of the sphere is refer z-wu t8g 9g,zz *-cyujtbi/1exs,3dhred to as a

A. convex mirror.

B. concave mirror.

C. plane mirror.

D. double-sided mirror.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the radius of curvature of the concave mirror is r, the focal length 4u.l7o7nj zc kis

A. 2r

B. r

C. r/2

D. cannot be determined from the information given

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray, traveling parallel to a concave mirror's axis, strdgq ys dr.m(;ykogcfg/t/(s-8 .kgy*ikes the mirror's surface near its midpoint. Aff.c( ;y(*sggkd s/y r o/tm-qkgyd. g8ter reflection, this ray

A. again travels parallel to the mirror's axis.

B. travels at right angles to the mirror's axis.

C. passes through the mirror's center of curvature.

D. passes through the mirror's focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light arriving at a concave mirror on a path parallel to the axis q64vnr *zdvp 0+ab+aw is reflected

A. back parallel to the axis.

B. back on itself.

C. through the focal point.

D. through the center of curvature.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray, traveling obliquely to )3sg4genz( yogx71yl s(zl( b a concave mirror's axis, crosses the axis at the mirror's center of curvature before strikingelb14y gxlzzg()ss( 3oy(7 gn the mirror's surface. After reflection, this ray

A. travels parallel to the mirror's axis.

B. travels at right angles to the mirror's axis.

C. passes through the mirror's center of curvature.

D. passes through the mirror's focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light arriving at a concave mirror on a path through the cent0i,sa dlf-k1 ser of curvature is reflefsakd-01i l,scted

A. back parallel to the axis.

B. back on itself.

C. through the focal point.

D. midway between the focal point and the center of curvature.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray, traveling obv095m; o6qph a t*r bnkqmo+2.dtvs6v liquely to a concave mirror's surface, crosses the axis at the mirror's focal point before strikingt.ptdb q0oro6925sv nv6q hk a m*m;v+ the mirror's surface. After reflection, this ray

A. travels parallel to the mirror's axis.

B. travels at right angles to the mirror's axis.

C. passes through the mirror's center of curvature.

D. passes through the mirror's focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light arriving at a concave mir5kwsh+ bamytna 8. +,rror on a path through the focal point is reflected.nwh, arb8a5sk ty+ +m

A. back parallel to the axis.

B. back on itself.

C. through the focal point.

D. through the center of curvature.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

18#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State how to draw the three /(jnmu3czs1l3nim9krays for finding the image position due to a curved mirr/lcmn 31uszj n3(9k mior.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If you stand in front of a concave mirror, exactly at its focal po26s ly;y ip/pmint,

A. you won't see your image because there is none.

B. you won't see your image because it's focused at a different distance.

C. you will see your image, and you will appear smaller.

D. you will see your image and you will appear larger.

E. you will see your image at your same height.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed at a concave mirror's center of curvature mys t6/0llkkj6u/we( . The image produced by the mirk/ /k 6slu ym6ew(j0ltror is located

A. out beyond the center of curvature.

B. at the center of curvature.

C. between the center of curvature and the focal point.

D. at the focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is positioned between a concave mirror's3mow a4b(k z4s center of curvature and its focal point. The image produced by the mirror iaomk443(wz sbs located

A. out past the center of curvature.

B. at the center of curvature.

C. between the center of curvature and the focal point.

D. at the focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is situated between a concave mirror')g4r4l30u2ewfc jt j-a *uusae3hyt7s surface and its focal point. The image formed in th4atwgru- u)7 *teja3e3f 2uy 4 hslc0jis case is

A. real and inverted.

B. real and erect.

C. virtual and erect.

D. virtual and inverted.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If you stand in front of a convex mirror, at the same distance from it as itlc;cz( w(+*-)rzr7ygjvf uugczz6 6 7 wd(vuss ravz vru6lr6-z 7z()7gf*wu;(sj zg cyc d +wcu(dius of curvature,

A. you won't see your image because there is none.

B. you won't see your image because it's focused at a different distance.

C. you will see your image and you will appear smaller.

D. you will see your image and you will appear larger.

E. you will see your image at your same height.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If you stand in front of a convex mirrod)ae 44mvjhautu zk2t9-45u gr, at the same distance from it as its foca 4 m tv4azu5 -2)ujd49uegtkhal length,

A. you won't see your image because there is none.

B. you won't see your image because it's focused at a different distance.

C. you will see your image and you will appear smaller.

D. you will see your image and you will appear larger.

E. you will see your image at your same height.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Sometimes when you look into a curved jvbrzdfqfx-/n*:wzu l /4c)8 mirror you see a magnified image (a great big you) and sometimes you see a diminished image (a little you). If you look at the bottom (convex)qudcw -4nzv /*fbzf8x :)r j/l side of a shiny spoon, what will you see?

A. You won't see an image of yourself because no image will be formed.

B. You will see a little you, upside down.

C. You will see a little you, right side up.

D. You will see a little you, but whether you are right side up or upside down depends on how near you are to the spoon.

E. You will either see a little you or a great big you, depending on how near you are to the spoon.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Concave spherical mirrors prodk jp5qsmh qr5 *w5 v pyr1w+l12gw6z 0qzb9:tuuce images which

A. are always smaller than the actual object.

B. are always larger than the actual object.

C. are always the same size as the actual object.

D. could be smaller than, larger than, or the same size as the actual object, depending on the placement of the object.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Convex spherical mirs u+0fdx0pv2g)m sl9erors produce images which

A. are always smaller than the actual object.

B. are always larger than the actual object.

C. are always the same size as the actual object.

D. could be larger than, smaller than, or the same size as the actual object, depending on the placement of the object.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

28#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A single concave spherical mirror produces an image wgmb b/ 7we3mo,hich is

A. always virtual.

B. always real.

C. real only if the object distance is less than $f$.

D. real only if the object distance is greater than $f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

29#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A single convex spherical mirror produces an image wk esi,bspjor l1 ,a ,6:8em) wf tf)qz2:vv2blhich is

A. always virtual.

B. always real.

C. real only if the object distance is less than $f$.

D. real only if the object distance is greater than $f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

30#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A negative magnification for a mirror m f1w ump;fwvguyiqab505d). u:.3 mcm eans

A. the image is inverted, and the mirror is concave.

B. the image is inverted, and the mirror is convex.

C. the image is inverted, and the mirror may be concave or convex.

D. the image is upright, and the mirror is convex.

E. the image is upright, and the mirror may be concave or convex.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the image distance is positive, the image formed is+9x99 i 8p zrzbqrtj-xf1zzf2

A. a real image.

B. a virtual image.

C. either a real or virtual image.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the image distance is negati7: w4a /-f sdyxe7wnohve, the image formed is

A. real image.

B. virtual image.

C. either a real or virtual image.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

33#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the magnification io nveh8o 8gza4m4 lve*:;yy-ws a positive value, the image is

A. upright.

B. inverted.

C. enlarged.

D. shrunk.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the magnification is a neg zzd14w 0celpdod9, t8ative value, the image is

A. upright.

B. inverted.

C. enlarged.

D. shrunk.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the absolute value of the magnification is larger than one, then the imaghsp-6 )uk05xl:kg udj e is-k6u)5s0p x:g u kjlhd

A. larger than the object.

B. the same size as the object.

C. smaller than the object.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the absolute value of the magnification is smaller than oneualafz2g)4q. l f -.f 2adovw7, then the image i.fdwla427azfaglqu2 ) -vf. os

A. larger than the object.

B. the same size as the object.

C. smaller than the object.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the absolute value of the magnification is equal to one, the:n ( i/kqphoc ef :v,/bkjhb:;jw,l k0n the image is

A. larger than the object.

B. the same size as the object.

C. smaller than the object.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light travels fastestl*yn yi399zo c

A. in a vacuum.

B. through water.

C. through glass.

D. through diamond.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

For all transparent ma8dajmg b+x;e ub6) nj--wda f i.qya:/terial substances, the index of refraction

A. is less than 1.

B. is greater than 1.

C. is equal to 1.

D. could be any of the given answers as it all depends on optical density.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

40#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An index of refraction lesdzt;o+24+ hrx8m er ifs than one for a medium would imply

A. that the speed of light in the medium is the same as the speed of light in vacuum.

B. that the speed of light in the medium is greater than the speed of light in vacuum.

C. refraction is not possible.

D. reflection is not possible.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The index of refraction of diamopjgay9h0*9/t9kdlb bnd is $2.42$. This means that a given frequency of light travels

A. 2.42 times faster in air than it does in diamond.

B. 2.42 times faster in diamond than it does in air.

C. 2.42 times faster in vacuum than it does in diamond.

D. 2.42 times faster in diamond than it does in vacuum.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The angle of incidencebr1m0ugn.m zy 4s1rb2

A. must equal the angle of refraction.

B. is always less than the angle of refraction.

C. is always greater than the angle of refraction.

D. may be greater than, less than, or equal to the angle of refraction.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light traveling at an angle into a denser medium is refthrg)h mb3cbe60l 3b3 iah,l-e7 c/ 4m (jhdqhracted

A. toward the normal.

B. away from the normal.

C. parallel to the normal.

D. equally.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

44#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light enters air from water. The angled +(z lzet) (xuebrmtz3 pl754)ky)j u of refraction will be

A. greater than the angle of incidence.

B. equal to the angle of incidence.

C. less than the angle of incidence.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A ray of light, which is travev); lhk6n9v qpb.kmw/ling in air, is incident on a glass plate at a $45^{\circ}$ angle. The angle of refraction in the glass

A. is less than $45^{\circ}$.

B. is greater than $45^{\circ}$.

C. is equal to $45^{\circ}$.

D. could be any of the above; it all depends on the index of refraction of glass.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

46#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principle on which fiber optics is bv14v jy.nufz 6zz5k;s dt7wtlc2 z./jased is

A. refraction.

B. polarization.

C. dispersion.

D. total internal reflection.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The critical angle for a beam of light kf(ujj h(wn7g,kb; a0cj4y a)passing from water into air is $48.8^{\circ}$. This means that all light rays with an angle of incidence greater than this angle will be

A. absorbed.

B. totally reflected.

C. partially reflected and partially transmitted.

D. totally transmitted.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

48#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principle on which lens.vz 8mzaq7 x4ies work is

A. refraction.

B. polarization.

C. dispersion.

D. total internal reflection.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

49#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Lenses that are thickest at the center calle, zs(j4)cz f +ibxp,l 7ja,jjad

A. converging lenses.

B. diverging lenses.

C. either converging or diverging lens.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

50#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Lenses that are thinner at the wd l(,q ;(:9ldujjo wgcenter than the edges are called

A. converging lenses.

B. diverging lenses.

C. either converging or diverging lens.

D. can not be determined.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

51#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Lenses that are thicker at d72lg 3 k9vo r/1 zx25lpqfumjthe center

A. spread out light rays.

B. bend light rays to a point beyond the lens.

C. have no effect on light rays.

D. reflect light rays back.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

52#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two diverging lenses are similar hug03tg g6c3iqf) y u*except that lens B is rated at 20 diopters, whereas lens A h0gg6t*)3ycqigu fu3 is rated at 10 diopters. The focal length of lens B is

A. one-fourth of the focal length of lens A.

B. one-half of the focal length of lens A.

C. twice the focal length of lens A.

D. four times the focal length of lens A.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

53#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray, traveling parallel to the axi/ndhmr0 qoqka(;wy +baxcr//z .da 52s of a thin concave lens, strikes the lens near its midpoint. After traveling though the lens, this ray emerges traveling obliquely to txd0n aaaozy/ qc2 rq(.dr+bk 5/mh;w/he axis of the lens

A. such that it never crosses the axis.

B. crossing the axis at a point equal to twice the focal length.

C. passing between the lens and its focal point.

D. passing through the focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

54#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray, traveling parallel to thezf-h52kmm u4tj vm s+ic37x3v(ek gf8 axis of a convex thin lens, strikes the lens near it3vvme3c 5sfj im+-th uk 8 z24kx(7mgfs midpoint. After traveling through the lens, this ray emerges traveling obliquely to the axis of the lens

A. such that it never crosses the axis.

B. crossing the axis at a point equal to twice the focal length.

C. passing between the lens and its focal point.

D. passing through its focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

55#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State how to draw the three rays for finding the imag /h7-qm xbkltm o+bn46e position due to a thin lenbb4xnm7t hm-6q /ko+l s.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

56#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex lens has focajw9m y-9ypj/gab8w:x-v d +kzl length $f$. An object is located at infinity. The image formed is located

A. at $2f$.

B. between $f$ and $2f$.

C. at $f$.

D. between the lens and $f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

57#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex lens has a focal le -x v8czv+qa)mngth $f$. An object is placed at $f$ on the axis. The image formed is located

A. at infinity.

B. between $2f$ and infinity.

C. at $2f$.

D. between $f$ and $2f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

58#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex lens has a focakmwy d2k4n, mhaf99;pxo2h x3l length $f$. An object is placed at $f$ on the axis. The image formed is located

A. at $2f$.

B. between $f$ and $2f$.

C. at $f$.

D. between the lens and $f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

59#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex lens has a focal q yyl,f5afn)9 length $f$. An object is placed between $f$ and $2f$ on the axis. The image formed is located

A. at $2f$.

B. between $f$ and $2f$.

C. at $f$.

D. at a distance greater than $2f$ from the lens.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

60#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex lens has a focal le6th, x99qogfangth $f$. An object is placed between infinity and $2f$ from the lens on its axis. The image formed is located

A. at $2f$.

B. between $f$ and $2f$.

C. at $f$.

D. between the lens and $f$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

61#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A object is placed between a convex lens and its focal poin:w3 t ry/l0pamt. The image formed iwpm0ty3l :/r as

A. virtual and erect.

B. virtual and inverted.

C. real and erect.

D. real and inverted.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

62#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The images formed by co: qc;xbb lcgpr p z88s.gx4a:8oe+.dpncave lenses

A. are always real.

B. are always virtual.

C. could be real or virtual; it depends on whether the object distance is smaller or greater than the focal length.

D. could be real or virtual, but always real when the object is placed at the focal point.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

63#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The image of the rare stamp you see throubhjdl ol6g.ueal- : 2 wwlia3j.m/ ;7vgh a magnifying glass is

A. always the same orientation as the stamp.

B. always upside-down compared to the stamp.

C. either the same orientation or upside-down, depending on how close the stamp is to the glass.

D. either the same orientation or upside-down, depending on the thickness of the glass used.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

64#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A lamp is placed 1 m from a screen. Between the lamp and uyy-fjamk ( fkg/,3gbbe33tm- k ;oa/ the screen is placed a converging lens of focal length 24 cm. The filament of the lamp can be imaged on the screen. As the lens position is varied wit;ukk3bomy yeg -bam /3k,jf/(3f-tg ah respect to the lamp,

A. no sharp image will be seen for any lens position.

B. a sharp image will be seen when the lens is halfway between the lamp and the screen.

C. a sharp image will be seen when the lens is 40 cm from the lamp.

D. a sharp image will be seen when the lens is 60 cm from the lamp.

E. a sharp image will be seen when the lens is either 40 cm from the lamp or 60 cm from the lamp, but not otherwise.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

65#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two thin lenses, of focal lexttbu/ 5 fo6upfp:5 (s7 xr;ajngths $f_1$ and $f_2$ placed in contact with each other are equivalent to a single lens of focal length of

A. $f_1 + f_2$.

B. $1/(f_1 + f_2)$.

C. $(f_1 + f_2)/f_1 f_2$.

D. $f_1 f_2/(f_1 + f_2)$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

66#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two thin double-convex (convex-convex) lenses are placed in cb6t7uoee/b sm6 sbr-3k7u; qcontact. If each has a focal length of 20 cm,ub b3sb-77tm6rckusqo6/e; e how would you expect the combination to function?

A. about like a single lens of focal length 20 cm

B. about like a single lens of focal length 40 cm

C. about like a single lens of focal length slightly greater than 20 cm

D. about like a single lens of focal length less than 20 cm

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

67#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diverging lens ($f = -4.0 \; cm$) is positioned 2.0 cm to the left of a converging lens ($f = +6.0 \; cm$). A 1.0-mm diameter beam of parallel light rays is incident on the diverging lens from the left. After leaving the converging lens, the outgoing rays

A. converge.

B. diverge.

C. form a parallel beam of diameter D > 1.0 mm.

D. form a parallel beam of diameter D < 1.0 mm.

E. will travel back toward the light source.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

68#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A laser beam strikes a plap,:c m uomum 6y8y,qfy-z 0,jkne's reflecting surface with an angle of incidence of ,um, zqk :cy m-06y8,yjfmop u$52^{\circ}$. What is the angle between the incident ray and the reflected ray?

A. $52^{\circ}$

B. $105^{\circ}$

C. $45^{\circ}$

D. $90^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

69#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is located rb ;q80 gwpzvnql ;(h82.6 m in front of a plane mirror. The image formed by the mirror appears t;bq w 0q;lzn8ph(r 8vgo be

A. 1.3 m in front of the mirror.

B. on the mirror's surface.

C. 1.3 m behind the mirror's surface.

D. 2.6 m behind the mirror's surface.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

70#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How far are you from your image when you stand 0.75 m in front of a verticwp4(fzd / eir8i6fu;gal plane 6w/f8iuf4gei(z ;dp rmirror?

A. $0.75 \; m$

B. $1.5 \; m$

C. $3.0 \; m$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

71#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How fast do you approach your image when you approach a iw)75c czs7qdjy0rx/0pc*51onlj wm vertical plane mirror at io n7)wxcdw1*p/70jly 5zcqj 5rs m0ca speed of 2 m/s?

A. 1 m/s

B. 2 m/s

C. 4 m/s

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

72#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A spherical concave mirror has a radius of curvature of 20 cm. How far from the w/t2 3p7bctur mirror is the focaltp 7ubrc/t23 w point located?

A. $10 \; cm$

B. $20 \; cm$

C. $30 \; cm$

D. $40 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

73#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A concave mirror with a - a p1b)h;hn 87vzxeleradius of 20 cm creates a real image 30 cm from the mirror. What is1-lx8ezb nehh)7v ;ap the object distance?

A. $20 \; cm$

B. $15 \; cm$

C. $7.5 \; cm$

D. $5.0 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

74#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A object is 12 cm in9/hm tywdjppa r2(6wdw) a;) e front of a concave mirror, and the image is 3.0 cm in front of the mirror. What is the focala a p6d m(9yd)) ;w/ejw2wphtr length of the mirror?

A. $15 \; cm$

B. $4.0 \; cm$

C. $2.4 \; cm$

D. $1.3 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

75#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 10 cm in front of a concave mirror with focal length 3 cm. )rema*+8 xzw,q(pnq x Where is th8+, m*)xzeqwx arn(qpe image?

A. 13 cm from the mirror

B. 7.0 cm from the mirror

C. 4.3 cm from the mirror

D. 3.3 cm from the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

76#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A concave spherical mirror has a focal length of 20 ocbnv6xi4z kqadtfzjl8;3)qk 8 7p i.p79g:qcm. An object is placed 10 cm in front of the mirror on the m 3qk4fxp:vz8pq7zc;6ikt 8 ).gdoqinab 97jl irror's axis. Where is the image located?

A. 20 cm behind the mirror

B. 20 cm in front of the mirror

C. 6.7 cm behind the mirror

D. 6.7 cm in front of the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

77#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A concave spherical mirror has a focal length ofhf4p5)j ltc *l 20 cm. An object is placed 30 cm in front of the mirror on the mirror's axis. Where is the image lj)5phc *4ftllocated?

A. 12 cm behind the mirror

B. 12 cm in front of the mirror

C. 60 cm behind the mirror

D. 60 cm in front of the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

78#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 5.7 cm from a concave mirror. The image c-6 4yyd+8jq rrxe4w ais 4.7 cm tall, and 10 cm from the mirror. How tall is the awde q-ycyrx r6j +484object?

A. $12 \; cm$

B. $11 \; cm$

C. $8.2 \; cm$

D. $2.7 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

79#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed 15 cm from a concave mirror of focal l*dawdau4s *q 13acjd;ength 20 cm. The objectaad ;wq 4d*c3s*1ujad is 4.0 cm tall. How tall is the image?

A. $1.0 \; cm$

B. $2.0 \; cm$

C. $8.0 \; cm$

D. $16 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

80#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 47.5 cm tall. The image is 38.6 cm tall, and 54swerk e03du .ih*rx14.8 cm from the mirror. How far is the object from e4*u ke3r.5 irxdwh0sthe mirror?

A. $124 \; cm$

B. $47.6 \; cm$

C. $18.2 \; cm$

D. $12.0 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

81#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A 1.4 cm tall object is 4.0 cm from a concave mirror. If the image is 4.0 yad9q+w49t9(tnz ezv cm tall, how far is it from the mirror?a9 49 9wv(nteqzz ydt+

A. $11 \; cm$

B. $9.4 \; cm$

C. $1.4 \; cm$

D. $0.090 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

82#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed 15 cm from o awsr59d7- kxf(o hqgw5; ju7c:ngb(a concave mirror of focal length 20 cm. The object is 4.0 cm tall. Wherehun7gbf-qarc ;o(k 7s od g 955xjw(:w is the image located?

A. 12 cm behind the mirror

B. 12 cm in front of the mirror

C. 60 cm behind the mirror

D. 60 cm in front of the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

83#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When a person stands 40 cm in front of a cosmetic mirror (concave mirror-wt/tcm xxx0*t)f -ymv /n:f(g:av zd), the erect image is twice the size of the object. What is the focal length of the ttx x/mfdc- w(v* - gmy/ vfxz0atn)::mirror?

A. $27 \; cm$

B. $40 \; cm$

C. $80 \; cm$

D. $160 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

84#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person's face is 30 cm in front of a c 5 o.s2qyqivx1oncave shaving mirror. If the image is an erect image 1.5 times as large as the object, what is the mirq oiv2.qsxy51 ror's focal length?

A. $20 \; cm$

B. $50 \; cm$

C. $70 \; cm$

D. $90 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

85#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An image is 4.0 cm behind a concave mirror with focal length 5.0 cm. Where is ljsatxz9y yr25 j8ujns 867(zt snayzjrt 7ux 685 ljz8y2(sj9he object?

A. 2.2 cm in front of the mirror

B. 2.2 cm behind the mirror

C. 9.0 cm in front of the mirror

D. 1.0 cm behind the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

86#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex spherical mirror has a focal length of -20 8w*h6mcp fk9u89 s ml,k9n tkccm. An object is placed 10 cm in front of the mirror on the m9ktwcupml*ch88m k ks,f699n irror's axis. Where is the image located?

A. 20 cm behind the mirror

B. 20 cm in front of the mirror

C. 6.7 cm behind the mirror

D. 6.7 cm in front of the mirror

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

87#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A convex spherical mirror his wl akn2wjg(8:y- 2pas a focal length of -20 cm. An object is placed 30 cm in front w-ky(pwa8:s2n gji l2of the mirror on the mirror's axis. Where is the image located?

A. 12 cm in front of the mirror

B. 60 cm behind the mirror

C. 60 cm in front of the mirror

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

88#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 14 cm in front of a convex mirrct, 1.1bw7hw3ehoy s -ubvw+zor. The image is 5.8 cm behind the mirror. What is the focal l,3ozwhvu-wsc7 1e.bhy w+1tbength of the mirror?

A. -4.1 cm

B. -8.2 cm

C. -9.9 cm

D. -20 cm

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

89#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 8.90 cm tall. The ih t4-gn51kk( 9 okz uno2mxi0pmage is 7.80 cm tall, and 14.8 cm from a convex mirror. What is the mirror ghn5tu i0mp12z(- k9o noxk4k's focal length?

A. -120 cm

B. -105 cm

C. -16.9 cm

D. -13.0 cm

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

90#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a material has an index of asm(3 k punz*s0c q-t)refraction of 1.50, what is the speed of light through )s (zcsqu p3a-*ntm0k it?

A. $2.00 \times 10^{8} \; m/s$

B. $3.00 \times 10^{8} \; m/s$

C. $4.50 \times 10^{8} \; m/s$

D. $6.00 \times 10^{8} \; m/s$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

91#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A light ray in air is incident on an,v0 obds0sk:(: spx jgj4s8pz air to glass interface at an angle of $45^{\circ}$ and is refracted at an angle of $30^{\circ}$ to the normal. What is the index of refraction of the glass?

A. 1.23

B. 1.31

C. 1.41

D. 1.74

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

92#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light enters a substance gz ;d:x ypfzei9-+cnlx :pi/.from air at an angle of $32.0^{\circ}$, and continues at an angle of $23.0^{\circ}$. What is the index of refraction of the substance?

A. 0.74

B. 1.11

C. 1.28

D. 1.36

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

93#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light passes from air to water. The incoming ray is at an angle o 01cw-1 4z hdx 9;nlwwy3lyioof $17.0^{\circ}$ to the normal. The index of refraction is 1.33. What is the angle in the water?

A. $22.9^{\circ}$

B. $22.6^{\circ}$

C. $18.3^{\circ}$

D. $12.7^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

94#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An oil layer that is 5.0 cm thick is spread smoothlym b1 atrr5 2cqixqebyay/ 6-:3 and evenly over the surface of water on a windless day. What is the angle of refraction in the water for a ray of liqx3 rem-2 c/b:1 yqb56raatyight that has an angle of incidence of $45^{\circ}$ as it enters the oil from the air above? (The index of refraction for oil is 1.15, and for water it is 1.33.)

A. $27^{\circ}$

B. $32^{\circ}$

C. $36^{\circ}$

D. $39^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

95#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diver is 1.2 m beneath the surfawk5ld2h sp/z9ce of a still pond of water. At what angle must the diver shine a beam of light toward the surfaw pklh2d 59sz/ce in order for a person on a distant bank to see it? (The index of refraction for water is 1.33.)

A. $41^{\circ}$

B. $49^{\circ}$

C. $59^{\circ}$

D. $90^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

96#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A beam of light, traveling in air, strikes a plate of transparent maternwjqd9 u4f )jp;i:6exk*w, ajial at an anglew xdakuej iq*p,n: 9;wjj64)f of incidence of $56.0^{\circ}$. It is observed that the reflected and refracted beams form an angle of $90.0^{\circ}$. What is the index of refraction of this material?

A. 1.40

B. 1.43

C. 1.44

D. 1.48

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

97#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A beam of light traveling in air is incident on a slab of tv..hbu krkr:6 ransparent material. The incident beam and the refracted bh.r 6ub r.:kvkeam make angles of $40^{\circ}$ and $26^{\circ}$ to the normal. What is the speed of light in the transparent material?

A. $1.0 \times 10^{8} \; m/s$

B. $2.0 \times 10^{8} \; m/s$

C. $2.3 \times 10^{8} \; m/s$

D. $3.0 \times 10^{8} \; m/s$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

98#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A substance has an indn x ukq0mc;1s24mjt0jex of refraction of 1.46. Light is passing through it at xj c0mj;u2msn1q04t k$53.0^{\circ}$. At what angle will it leave into the air?

A. It will not leave.

B. $59.1^{\circ}$

C. $43.2^{\circ}$

D. $33.2^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

99#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the critical angle for light traveling from ca l b0 9 yfiq-e:0-lg.ovm*cmdrown glass (n = 1.52) into water (n = 1-9 .gei 0bld: a loy0qv*mf-cm.33)?

A. $42^{\circ}$

B. $48^{\circ}$

C. $57^{\circ}$

D. $61^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

100#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Lucite has an index of refraction of 1.50. Wh8z+pou,f .mt1rjlr: uq2o .c pat is its critical angle of incidence?j.u+,z8 fuq1rtc .oppo 2 :rlm

A. $11.6^{\circ}$

B. $15.4^{\circ}$

C. $41.8^{\circ}$

D. $87.4^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

101#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An optic fiber is made of clear plastic with index of refraction of 1.50. 1/)dt 1j8g0ikmnlw* tlecx90tgpn0 u For what angle of incidencx*dj 1lng1)0t 8 e/0pcltmtnkg9wi0ue will light remain within the plastic "guide"?

A. $>23.4^{\circ}$

B. $>38.3^{\circ}$

C. $>40.3^{\circ}$

D. $>41.8^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

102#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The critical angle for aahul v(cj ;4g0 substance is measured at $57.3^{\circ}$. Light enters from air at $45.0^{\circ}$. At what angle will it continue?

A. $34.7^{\circ}$

B. $45.0^{\circ}$

C. $53.7^{\circ}$

D. It will not continue, but be totally reflected.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

103#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Light enters a substance from air at 6 7u*vni :g.mpogv p(h acn 4gh.w3hp)$30.0^{\circ}$ to the normal. It continues through the substance at $23.0^{\circ}$ to the normal. What would be the critical angle for this substance?

A. $53.0^{\circ}$

B. $51.4^{\circ}$

C. $36.7^{\circ}$

D. $12.6^{\circ}$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

104#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An optical fiber is 1.0 meter long and has a diametef rixu,wt y4losx:g;m9br6kp 4 n6v4-r of 20 mm. Its ends are perpendicular to its axis. Its index of refraction is 1.30. What is the maximum number of reflections a light ray entering one engbrw6r ;oiv9 u6,lt4nfk px-x 4s4y:md will make before it emerges from the other end?

A. 42,000

B. 26,000

C. 24,000

D. 18,000

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

105#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed 40 cm in front of a 20 cm focal length converging lens.ahb 6rn4b.ki;z0mn* y5 jbc,qoi/hg3 How far is the iczr46gq h5 n iy n/bbjo3ib.,mha*k0;mage of this object from the lens?

A. $40 \; cm$

B. $20 \; cm$

C. $13 \; cm$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

106#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 12 cm in front of a converging lensa-ae1 ).9ul xwx;b;ia- lisyc with focal length 4 cm. Where is the imags;ca y9 ieaux)xa;.-bi1lw-le?

A. 8.0 cm behind the lens

B. 6.0 cm in front of the lens

C. 6.0 cm behind the lens

D. 4.0 cm in front of the lens

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

107#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 15 mm in frovq s2 3joy 8a-2jngpy8lia 6(vnt of a converging lens, and the image is 4.0 mm behind the lens. What is the fnq i2lyas joyp8a -862 j(g3vvocal length of the lens?

A. $11 \; mm$

B. $5.5 \; mm$

C. $3.8 \; mm$

D. $3.2 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

108#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A 14-mm tall object is 4.0 mm from a convergih22jzfyvr6+4,a ehrq u6 tl :fng lens. If the image is 4.0 mm tall, how far is ith2eh +va2jz u6y4lr: 6f,r tfq from the lens?

A. $14 \; mm$

B. $8.7 \; mm$

C. $1.4 \; mm$

D. $1.1 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

109#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When an object is 40 mtj,+ib ee0f 4h in front of a converging lens the inverted image is half the size of the object. f0t4hejb+e, i What is the focal length of this lens?

A. $13 \; cm$

B. $20 \; cm$

C. $40 \; cm$

D. $53 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

110#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An image is 4.0 mm in front of a converging lens with focal length 5.0 mm. Waz r,(aq+;dhm(0 r5l2 w mfhyxhere is tx;qr dlr a yz a+m(hf0h2(wm5,he object?

A. 2.2 mm in front of the lens

B. 2.2 mm behind the lens

C. 9.0 mm behind the lens

D. 20 mm in front of the lens

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

111#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 4.1 cm tall, and 10.3 cm from a converging lens. The image is viix caom20dq 8yvp qk4q(i9 *s,rtual and 6.2 cm tall. Whm8k o 0d9iqv s*y4,xi qq2c(apat is the focal length of the lens?

A. $6.8 \; cm$

B. $10 \; cm$

C. $16 \; cm$

D. $30 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

112#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 15.2 mm from a converging lens. The image is 4.0 u3 qkgb. 3v9zac 7pa0umm tall, and 9.0 cm from the lensb7p vk uzq3 .caa93u0g. How tall is the object?

A. $6.8 \; mm$

B. $5.4 \; mm$

C. $1.7 \; mm$

D. $0.68 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

113#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When an object is placed 60 cm from a converging lens, it for2 nwt*,81jcig8z i8dc xmq7kmms a real image. When the object is movekn*8tcdgm7i m8wc j82iz , q1xd to 40 cm from the lens, the image moves 10 cm farther from the lens. What is the focal length of the lens?

A. $20 \; cm$

B. $30 \; cm$

C. $40 \; cm$

D. $42 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

114#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed at a distance of 3- fq o1q7ck3xe0 cm from a thin convex lens. The lens has a focal length of 10 cm. What are the values, respectively, of the image distance and 71-q o ceqk3fxlateral magnification?

A. 15 cm, 2.0

B. 25 cm, 1.0

C. 60 cm, -0.50

D. 15 cm, -0.50

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

115#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed at 30 cm in front of a dn/f o ln9t)l5iiverging lens with a focal length ofl/n 5f ito9l)n 10 cm. What is the image distance?

A. $7.5 \; cm$

B. $-7.5 \; cm$

C. $15 \; cm$

D. $-15 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

116#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed at 30 cm in frc rqffmrr wy4b5c3n9u/. t u9)ont of a diverging lens with a focal length of 10 cm. What is the mag5 ymf 3t.ucn4/uf9r)cr9bqw rnification?

A. 0.25

B. -0.25

C. 0.67

D. -0.67

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

117#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 10.4 cm tall, and 4.8 cm 3 vw08y o2)t,p-:umoozlwdqmin front of a diverging lens. The image is 4.0 cm from the lens. How tall is the image?-u):y mo d,0lptoo3m2 v 8wqzw

A. $13 \; cm$

B. $8.7 \; cm$

C. $5.4 \; cm$

D. $1.8 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

118#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is 6.0 cm tall, and is in front of 5ue+sv/ iq:;pnk 5q -yddq.vrspv6+oe c-m:g a diverging lens. The image is 2.5 cm tall, and 7.5 cm from the lens. Wha+.qge-pqo :5v6ukmq +sv cipv:/sd;- dne 5ry t is the focal length of the lens?

A. -6.0 cm

B. -7.5 cm

C. -13 cm

D. -18 cm

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

119#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object is placed at a distance of 40 cm from a thin lens. If a virtuaa /bo9wcsec*wj5vs+x5c3 rr :l image forms at a distance of 50 cm from the lens, on the cw+o*ce 9wc:xrb j5ssar 5/3v same side as the object, what is the focal length of the lens?

A. $45 \; cm$

B. $75 \; cm$

C. $90 \; cm$

D. $200 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

120#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How far from a lens of focal length 50 mm must the object be placed z istzu 3)acs;uv5 o01if it is to form a virtual image magnified in size by a factor o ;oasc0iutzu51)s3 z vf three?

A. $33 \; mm$

B. $42 \; mm$

C. $48 \; mm$

D. $54 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

121#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How far from a 50-mm focal length len/ t*skzn3h 2fzu+hj.yu3 ajk (s, such as is used in many 35-mm cameras, must an object be positioned iu3/thzy2u+.az3njhkf j*s ( kf it is to form a real image magnified in size by a factor of three?

A. $46 \; mm$

B. $52 \; mm$

C. $58 \; mm$

D. $67 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

122#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two very thin lenses, each with focal length 20 cm, are plspc jh h+o( -xlubw8uaj u)x+m-i/w1)aced in contact. What is the focal length of this compoun8cl -(ux j sww1+)/hi) p-ou+m bhjaxud lens?

A. $40 \; cm$

B. $20 \; cm$

C. $15 \; cm$

D. $10 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

123#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A double convex (convex-convex) thin lens hasq5;xuw f8 ,q r-v-vqpy radii of curvature 46 cm, and is made of glass of ;xf5wvqr8 y- vqqp ,u-index of refraction n = 1.60. What is the focal length?

A. infinite

B. $38 \; cm$

C. $30 \; cm$

D. $18 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

124#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A double convex lens made of glass (n = 1.50) ha- pas.ou2 2f ijtq c(+-:po0xnj:urrv s a radius of 40 cm on the front side and 30 cm on the back side: sa-j(xv0ut-:i jpc22p q.uo +rnrfo. What is the focal length of the lens?

A. $11 \; cm$

B. $34 \; cm$

C. $80 \; cm$

D. $240 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

125#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A biconvex lens is formediat2 o;7n dxf1 by using a piece of plastic (n = 1.70). The radius of the front surface is 20 x;oaf n7ti d21cm and the radius of the back surface is 30 cm. What is the focal length of the lens?

A. $17 \; cm$

B. $86 \; cm$

C. $-86 \; cm$

D. $-17 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

126#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A plano-convex lens is to hav.vkxo p 2n82cfe a focal length of 40 cm. It is made of glass of index of refractio.pf8nc xvo 2k2n
1.65. What radius of curvature is required?

A. $13 \; cm$

B. $26 \; cm$

C. $32 \; cm$

D. $36 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

账号		自动登录	找回密码
密码			立即注册

未使用图片

本次作答已使用

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100
101	102	103	104	105	106	107	108	109	110
111	112	113	114	115	116	117	118	119	120
121	122	123	124	125	126

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100
101	102	103	104	105	106	107	108	109	110
111	112	113	114	115	116	117	118	119	120
121	122	123	124	125	126

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100
101	102	103	104	105	106	107	108	109	110
111	112	113	114	115	116	117	118	119	120
121	122	123	124	125	126