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习题练习:Physics Unit23: Light and Geometric Optics



 作者: admin   总分: 126分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月28日 10:53  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Reflection, refraction, and the formation of ima2fh8 or-ewb9b ges by mirrors and lenses has been successful described by tw9 b8-2rhobf ehe

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The angle of incidencv1 ,7 r0,i hiqwikak7ce

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The principle on which mirrors ttrg- f4gl1 4zwork is

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A plane mirror forms an imag4 w1n60hxr c11 shcu zkb(fs)he that is

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Plane mirrors produce image750l0qtp df5460bxtpamp a fr s which

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An image formed when thqv.m7yf hgl z.i2em 8/sh63sbslv/ 4ze light rays do not actually pass through the image location, and vs 8f 4m/hsy2v/qhm6.ig l.blezz3s7would not appear on paper or film placed at that location is referred to as

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An image formed when the lp7 kpe4mbq ml txft:h-:4 *mr5ight rays pass through the image location, and could appear on paper or film placemktpfb 4:4et l hp: 7rxm5q*m-d at the that location is referred to as

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible to see a virtual image?8kv6xero m 9h68ajz0ieo h20 o;x*jmm

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spherical mirror on which reflection++y-fuhm o 8, fo*sior takes place on the outer surface of the spherical shapof-imfush o8++yo , r*e is referred to as a

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spherical mirror on which reflection takeq7. dgx*+ 6s cgh:opuzyx g3l/s place on the inner surface of the splg3sxg /o6.hc+gy:7 u zx*pd qhere is referred to as a

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the radius of curvature trcu dh 1l-a;g6eiwuipf()-8 of the concave mirror is r, the focal length is

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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, strikes the mirror'sry.lqp vu8c/yugc--1 surface near its midpoint. After reflect1ugy puq.rc-y8l-/ cv ion, this ray

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light arriving at a con zn024ioxd cx-cave mirror on a path parallel to the axis is reflected

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A light ray, traveling obliquely to a concave mirror's c c )vb5jmo45f/hche/ axis, crosses the axis at the mirror's center of curvature beform5cfvo) b /5jc4/c ehhe striking the mirror's surface. After reflection, this ray

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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 thqs+w bj8*n1eoq wt5 5u y 1hr3i p8:b3wiycz+ke center of curvature is y e85jwi 8 i ckw 5qorwuqznys1*b3b1t3+p+h: reflected

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A light ray, traveling obliquely to a concave mirror's surface, cref uh:x/ c6d k-(hyqc6osses the axis at the mirror's : xcu dhc6-ekh(fyq6/focal point before striking the mirror's surface. After reflection, this ray

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17#
 
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 t0(apkdlm(( cthrough the focal point is reflecte(a( ctp0m kd(ld

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18#
 
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 image pos *scl 3ufo3h8ud*ewe- ition due to a curved mi-e*uu8*f3 3o e dwhsclrror.
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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 mirs2*6ze ln m :0onzg0sfror, exactly at its focal point,

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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. The image pr*p (g* .-8rhy5t4s*vlaolay4 jjlhwoykf z1 *oduced by the mirro 1 *lhy8ay syjlz*flp w.og*v5ko- hj(4ar *t4r is located

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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's center of curvature and it7txjsc b70jg(z 4g 7fjs focal pogcg x(fjtjjb77 s07z4int. The image produced by the mirror is located

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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's surface and its focixhzl9i*7 .xx al point. The image formed in this i ihxx lz*7.x9case is

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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 qbm:30 1ag gyib ,tso7as its radius of curvatomgas, b t0g3y7bq:1i ure,

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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 mirror, ak7 s ftidqp/-1usc(g2 5z ux1ut the same distance from it as its focal len5 d/-cx uu( tf1zgsiq 7u1sk2pgth,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sometimes when you look into a curved mirror you see a magnified image (a grj 3+v v/3ouszreat big you) and sometimes you see a diminished image (a little you). Ifr ujvv3szo+ /3 you look at the bottom (convex) side of a shiny spoon, what will you see?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Concave spherical mirrors produce imag4)v2 m9tyqh0h ubs8jkes which

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Convex spherical mirrors produce *2l,fuvcht; . )nuj;jrrmb6a j oj,t (images which

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A single concave sphern xk8qzoqcg.npws :5 1c9up,9 ical mirror produces an image which is

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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 which vpyirt c(7: 0n xt;yv5is

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A negative magnification for a:o :x+uatix0u mirror means

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the image distance is posi4x q-3tu yk8vgtive, the image formed is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the image distance is negigm6w(y5 e tq*xq.hbd nvs p:;.)w iy(ative, the image formed is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the magnification is a positive value, theda4p) /ys;. r+ *jx9kfplkncx image is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the magnification is a negativeu-s6*v min lm- value, the image is

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the absolute value of the mauph 5g:4w.pxh b+ndpw am) s:k(+d+kygnification is larger than one, then the image isx+ :kpwdd.k)ag s hpu(+n w hby5p+4m:

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the absolute value of the m- o:vn/4a2qex.2r-b**w;pbjf muqty :peres agnification is smaller than one, then the image ip2;*rovmnu 2be: ept .4wqf/rbj ays:qe-x- *s

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the absolute value bb cau)s5.5zuo1 :ssjof the magnification is equal to one, then the image is

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light travels fastesf 0u h;mei0xw2t

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For all transparent material substances, the index of refractio),p(unn-b h rin

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An index of refraction less than one for a medium would imv vkq ;e+g,(;wn(nrc)u q v4qvply

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The index of refraction of sqzf/n5)o g r,diamond is $2.42$. This means that a given frequency of light travels

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The angle of inciden7 b1y-e8 rcwwoce

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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 reg5lq w(9q1rgl fracted

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light enters air from watebv sz;f e( 71g;.bpxlpx5wt5rr. The angle of refraction will be

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A ray of light, which is travk;lxi+5 /x/cqe+s,r( lxb giceling in air, is incident on a glass plate at a $45^{\circ}$ angle. The angle of refraction in the glass

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The principle on which fiber optics is based cuvb 1q- vvo +0i6z.ilef:6kg is

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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 passing g)5h4yt tvh89klo0u jfrom water into air is $48.8^{\circ}$. This means that all light rays with an angle of incidence greater than this angle will be

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The principle on which lenses work iol 6 f:)icem:2qpi9q1*qmvu vs

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lenses that are thickest at the center eigvb7u*sqw- :1kkm+ called

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lenses that are thinner at the center than the ed/rfial5, y3k pges are called

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lenses that are thicker at the cenpu bmev o,x.5;up:5k7 vjcmpc9)8 wvoter

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two diverging lenses are similar except that lene0b (lliks2d3bzp6o m )d i7,bs B is rated at 20 diopters, whereas lens A is rated at 10 diopters. ldo3),ped b20i (b6bk lzi7ms The focal length of lens B is

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A light ray, traveling parallel to the axis 66 7(otquw.onptsfx; of a thin concave lens, strikes the le.x7u6( n6t stwpoofq;ns near its midpoint. After traveling though the lens, this ray emerges traveling obliquely to the axis of the lens

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A light ray, traveling parallel to the axis of a convex thin lens, strike/ vk3p-dqdyl6km5rq/ s the lens near its midpoint. After traveling through the leq dky rv5md6-3 q/p/klns, this ray emerges traveling obliquely to the axis of the lens

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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 image position due to a thin lewrxzs f r(76*jnsfj(* rz7r x6ws.
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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex lens has focal lenr1d8oyk 2 nvf:gth $f$. An object is located at infinity. The image formed is located

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex lens has a foc0v-ev6e:jz7f g y bpt/al length $f$. An object is placed at $f$ on the axis. The image formed is located

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex lens has a focal len,b 8fqn dut+p/+0mdgzdyg b2 +gth $f$. An object is placed at $f$ on the axis. The image formed is located

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex lens has a focal lf;zkd)gkt:a *.v0 lcaength $f$. An object is placed between $f$ and $2f$ on the axis. The image formed is located

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex lens has a focal lengt8 sxm ux8r6tkf2(q n6ch $f$. An object is placed between infinity and $2f$ from the lens on its axis. The image formed is located

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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 point. jh fim-j3 f7 -j s1ahxi+pk1/qThe image formed q13msip+-hxa 1/kf jf7ijhj-is

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The images formed by concave len.gwbp yg8o(f/ 4h wk7tses

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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 thotdig i.yc;rjnj))c * ,xn99 irough a magnifying glass is

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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:tpmklr(jg ps0 d01hn4pv 7;i the screen is placed a converging lens of focal length 24 cm. The filament of the lamp can be imaged gn imldv:r7tkpp( 4hj ;00sp1on the screen. As the lens position is varied with respect to the lamp,

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two thin lenses, of focal le* yd8s/crh ax:ngths $f_1$ and $f_2$ placed in contact with each other are equivalent to a single lens of focal length of

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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 contact. hbfi9 d( 68usyIf each has a focal len hy8f6di(9sub gth of 20 cm, how would you expect the combination to function?

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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

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A laser beam strikes atys-k65nb)9:f1sfb w7vdy gn plane's reflecting surface with an angle of incidence of wvnf6gsk9 tnysf bdb5 :y7)- 1$52^{\circ}$. What is the angle between the incident ray and the reflected ray?

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object is located 2.6 m in front of a plane hc r(sm) n1n1tq h(zz*mirror. The image formed by the mirror appears to bhz ()11m* zhcqs(r nnte

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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 yo6gdsyc)ozcpuxa 9- .(1j1qq p,9 mcmxu stand 0.75 m in front of a vertical plane mirymxca osu699dzc.pc q1, -(m) pgj1qxror?

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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 vertical plane v.3- pi8voa smmirror at a speed of 2 m/s?i-v3sma .p v8o

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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 f gfm uxdr;4ak2 9-.qkcrom the mirror is the foacqm g;.uk-k24rxd9fcal point located?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A concave mirror with a radius of 20 cm creates x*-y uyi(kf:aa real image 30 cm from the mirror. What is the object distakyy ia-*:x(ufnce?

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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A object is 12 cm in front of a concave miryjacz/4p t(jdg*6o h trc,:9d ror, and the image is 3.0 cm in front of the mirror. What is thech op:,zj*drtt(jay g4 cd/69 focal length of the mirror?

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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. Where6 sh6ti:bg eu9 0ujenv8/vmc8 is the m9ue vbvgu/j6 ci8n0eh6:st 8image?

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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 cm. An object js*zbor9q0/:pe (ch wis placed 10 cm in front of the mirror on the mirror's axis. Where is the image located(j/ 09seqzw*:bo cp rh?

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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 of 20 cm. An object is place6ubhd+jjs d7f,qbq 4: y p78did 30 cm in front of the mirror on the mirror's axis. W+qj6phbd7f8 q4id7ybd: us j,here is the image located?

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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 is 4.7 cm tall, and 10 cm ;uj1)zjlfj5l4na em (from51; ul)zlj ej (4fnajm the mirror. How tall is the object?

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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 mi (t2pit 9ws8i- r2zw1noxcr/ r.x wv7irror of focal length 20 cm. The object is 4.0 cm talvii9122c w x r(zs/xtrr7opi -.8w twnl. How tall is the image?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object is 47.5 cm 8rrhzkifv*z4gf4cfh o; bu q,557q u2tall. The image is 38.6 cm tall, and 14.8 cm from the mirror. How far is the obje,u 7fvhqo2r u;8 ff*zgbzi4ch 45 krq5ct from the mirror?

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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 cmz69nmt1e,mk.o8 hoc g tall, how far is it fro 6,9.oc1ehm mk otzgn8m the mirror?

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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object is placed l/r+w vycq g;815 cm from a concave mirror of focal length 20 cm. The object is 4.0 cm tall. Where is t w;y/c8rqvlg+ he image located?

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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 iq; krhv 8/g:3x5 dlnm mdd3+i(concave mirror), the erect image is twice the size of3 +d5dqvdmi mkr:xgn ;38ilh/ the object. What is the focal length of the mirror?

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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 concave shaving mi; 6hx(ar7 g;n dwm,ahprror. If the image is an erect image 1; np(ghmha7w,xadr ;6 .5 times as large as the object, what is the mirror's focal length?

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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 conca*x*s 1k (p)xohvro bjgc5;ph-ve mirror with focal length 5.0 cm. Where is the objectg5c -1)xp(pvojsxh ;*hk*rbo ?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex spherical mivql9)a/n u-9dwm m1 vwrror has a focal length of -20 cm. An object is placed 10 cm in front of the mirror on the )u w vndm-9/wl1am9vqmirror's axis. Where is the image located?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A convex spherical mirror has a focal +4kxn2 plh+,of*g4nd itc d+n length of -20 cm. An object is placed 30 cm in front of the mirror o*kn oigh2+l +n dn fcp4+4x,tdn the mirror's axis. Where is the image located?

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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 mir dbg7.wg86:m+fgpd2di mzi-wq , ;ibnror. The image is 5.8 cm behind the mirror. m:+q7 g8;p -ddbinigmiw,zg bfd2w. 6What is the focal length of the mirror?

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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 image is 7.80 cm tall,gy o1ubqmre(18k9g9orq+a 6 e and 14.8 cm from a convex mirror9r e(eayko6+b r8g9oq qg11um. What is the mirror's focal length?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a material has anrs.73)pne y(esn c4oi index of refraction of 1.50, what is the speed of light through epno ()3sy7 . srn4iceit?

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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 air to glass interface at an angle 6p9/xhijyx a oq(/ d)hof $45^{\circ}$ and is refracted at an angle of $30^{\circ}$ to the normal. What is the index of refraction of the glass?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light enters a substruzwu 3kh3i7q8 *zm:;c qt6jz ance 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?

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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 ofi claiqvs)6/jfb j9)v6w r(s) $17.0^{\circ}$ to the normal. The index of refraction is 1.33. What is the angle in the water?

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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 smoothly and evuu2r8xs2 2elnw ac/; rbj26xaenly over the surface of water on a windless day. What is the angle of refraction in the water for a ray of light that has an angle of incidexs;r222 w jc2u8nrl/x6uaeab nce 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.)

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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 surface fdd fp.i n-5ob, ggr12of a still pond of water. At what angle must the diver shine a beam of light toward the surface in order ff,n rgdfd1g5b.2i p-oor a person on a distant bank to see it? (The index of refraction for water is 1.33.)

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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 po(upjd x 6dr (a8uta1,vufc),late of transparent material at an angle of incidence out v(u()x6p,a rafd1uoj c,d8f $56.0^{\circ}$. 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?

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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 transparent mazof+o a ,y68.l :fdtfoterial. The incident beam and the refraoya6ozft+l,do: f8 .f cted beam make angles of $40^{\circ}$ and $26^{\circ}$ to the normal. What is the speed of light in the transparent material?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A substance has an index of refraction of 1.46. Light pu3wv bgxmw--s- jje0h+v wy-x/37sy is passing through it at sj vewg03b-xj3+m 7-w-s - uv/ywpxyh $53.0^{\circ}$. At what angle will it leave into the air?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the critical angle for light travelingml2 tf(d dbbvpj:()*c 0 kzmp9 from crown glass (n = 1.52) into wab(zp 2*lt(fkjcm9d0: vd pb)m ter (n = 1.33)?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lucite has an index of refractio2qz /;zq7fjf ne2win 7n of 1.50. What is its critical angle of inciden / eqn7f;i72zwzfnj2 qce?

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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 indexdygiyfm.y: g9u8(m 6vjd u-g3 of refraction of 1.50. For what angle of incidence will light remain wi id-g.ud m3g ygfymuv:9j(86ythin the plastic "guide"?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The critical angle for a substances/sm 4y;/nzewm9, a6rgmh/k+w v; twb is measured at $57.3^{\circ}$. Light enters from air at $45.0^{\circ}$. At what angle will it continue?

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103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light enters a substance from air arzou 06z, :lozzuy1z5t $30.0^{\circ}$ to the normal. It continues through the substance at $23.0^{\circ}$ to the normal. What would be the critical angle for this substance?

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104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An optical fiber is 1.0 meter ls 3dx)6ira )pjong and has a diameter 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 end will make before it emerges from the otj 3ps d)air)6xher end?

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105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object is placed 40 cmyv0 ba/5vgto 9m .lbx6 in front of a 20 cm focal length converging lens. How fa abgo0/ yvx9.blt6 vm5r is the image of this object from the lens?

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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 lens y r 67twnx/2 rwezm+*q-oesb) with focal length 4 cm. Where is the r*/be nwx 6 +em7qow-zrsty) 2image?

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107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object is 15 mm in front:n 9ikhly1m56 9i+gxve cose8 5cp*sq of a converging lens, and the image is 4.0 mm behind tceiignhy9 1vqe5o9* csp+ 8l: s5kmx6he lens. What is the focal length of the lens?

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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 m7u0j (b2qw.4raos k mg-pt ,nym from a converging lens. If the image is 4.0 mm tall, how far s qyo2ur am.4g7 0w pb,j(tk-nis it from the lens?

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109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When an object is 40 m in front of a converging *ktkw) ,a*r jstrij k;0d/cw,lens the inverted image is half the size of the object. What is the fdri0r tj,a;ks** k/ c) wwjtk,ocal length of this lens?

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110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An image is 4.0 mm in f8h ;q+obahaof )vmu( 6ront of a converging lens with focal length 5.0 mm. Where is thefh ; 68qaa)oh(u+bo vm object?

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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 100,(vmfe1tg77wllcm4wbjs , n.3 cm from a converging lens. The image is virtual and 6.2 cm tall. What it0vl wmmb7w ec,s1,gn7jf (l4s the focal length of the lens?

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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+) c8shry;ay4t f a;v aqe(h;v.0 mm tall, and 9.0 cm froey+h;r;a)y cv (a;4sah 8vfq tm the lens. How tall is the object?

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113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When an object is placebbo 0ilgwk.9. d 60 cm from a converging lens, it forms a real image. When the object is moved to 40 cm from the lens, the image moves 10 cm farther f.9i0kwb bo.lg rom the lens. What is the focal length of the lens?

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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 30 cm from a thin convex ldu.upjwgi:t /aes2/4(i 3do/kcpll , ens. The lens has a focal length of 10 cm. What are the values, respectively, of the image distance and lateral magni/u polw,s /gpcd:(ae4i/2u ld k 3j.tification?

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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 diverging lens with a focal leng 8jbs:q2p f a*s74q,)7e wazconf; pmuth of 10 cm. What is the ps7o:f)2ufqp7q an ,ea4s*mbjcz 8 w ;image distance?

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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 front of a dive tx8bgeez6g8:v -q:anrging lens with a focal length of 10 cm. What is the ma:g xba-:8v68t eqezgngnification?

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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 in front of a divergingx kqd3c ) ,mucmi(4o7t lens. The image is 4.0 cm from the lenkuc md74c3qo xti( ,m)s. How tall is the image?

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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 a diverging lens. The imag :*6om .wqgxzoo+ z yns;b42sde is 2.5 cm tall, and 7.5 cm fro6+: dn.qyw4 m*x;o sg 2booszzm the lens. What is the focal length of the lens?

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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 lensojouptpa36t (o j: 8a8o7z tyse/b8xg.2oj8e . If a virtual image forms at a distance of 50 cm from the lens, on the same side as the object, whato ot zobgxj/u. 8o36apyjso8 a(e2878 ttp:je is the focal length of the lens?

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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 plv6q*zp -n /(v*p moaglaced if it is to form a virtual image magnified in size by a facto(onqmp / gv*l-ap zv6*r of three?

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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 lens, such as is used in many 35-mm camer ae3v /o2+axgkas, mustgoxkv /3ae+a 2 an object be positioned if it is to form a real image magnified in size by a factor of three?

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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 placed in contact. Whv(.sdnt3 :ifsat is the focal length of this compou: idt3.sf nvs(nd lens?

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123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A double convex (convex-co zc;x*cxl4voxq8 *k1 tnvex) thin lens has radii of curvature 46 cm, and is made of glass of index of refraction n = 1.60. What is the focal lengtc*1;x4 zckoq vl 8*txxh?

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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) has a rad0 *x7(/+fzgtg ards emius of 40 cm on the front side and 30 cm on the bafgd7rxm s*(/e +0 ztgack side. What is the focal length of the lens?

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125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A biconvex lens is f72f/khu8 xb*m(um geh ormed by using a piece of plastic (n = 1.70). The radius of the front surface is 20 cm and the radius of the back s8gx h/mufb*mu(7e hk2 urface is 30 cm. What is the focal length of the lens?

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126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A plano-convex lens is to have a focal length of 40 cm. It is made of glass o3+plw 8pz mu+3wdl;k mz -usakc1jeuf0m;-c, f index of reffmzkm,jcuda l3pm ew0usz8++-cl;k3 1 pu- ;w raction
1.65. What radius of curvature is required?

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