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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 images by mirrors 6wz 7-x1k,yqx 5dqclpiuf-g3 and lenses has been successfulixqg 7q,-- ywfu3c xkd1pz 56l described by the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The angle of inciden8b2vzz),xl ap:xg zk0ce

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The principle on which1o 2bw-f3 8oyc ykl+xv mirrors work 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 image that is.bm2 ub8-oravo2t fn 4

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Plane mirrors produce images wumh ldk.qc 8k)b 7f.0o4s2 lnshich

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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 or de3yqy f*atft,z)o9iu o93q s(k53the light rays do not actually pass through the image location, and would not appear on pazfyo(o qt rf3,o*q5au sy3 e)td9i 3k9per 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 light rays k(ucardln4* :pass through the image location, and could appear onr(ucnl a*dk:4 paper or film placed 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 immtbbys4w)o18g5x )g d age?

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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)v n0e+xy cv3r reflection takes place on the outer surface of the spherical shape icyrve3+) vn x0s 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 takes place on the inner surface a(q +-nqwwego,,rdx/of the sphere is referred to as (nd, qwrwog/ae+qx -, 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 of the concave mirror is r, ths zgavtux;n47 (jd2v-e 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 mirmymsnr: m 5.0r w(r2p .trp.error's surface near its midpoint. Ap rmy0.5:e r wrsnm (mrr.2p.tfter reflection, 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 concave mirrorrfh9tx7 m;-bz 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 obli o 9(x+elsq ,lwtjy/-jey)+r zquely to a concave mirror's axis, crosses the axis at the mirror's center of curvature before striking the mirror's surf,rex- (s/wjle9 zo)lyt y+q+jace. 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 9(tx4lv,nbl y through the center of curvature is re,l(nb x9v 4ltyflected

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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, crosses the aiwvx)v* h(ocft7my u)y7oez4 ; :v,c exis at the mirror's focal point before striking the mirror's surface. After reflectioniuc) z tv*(f e,yxo hm ;o:)7ev7vc4wy, 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 through the focal pogu6du;1le:cqgr / u9dint is reflected61qru/9eg:; udlu gd c

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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 kqpf qyji/ 0q:, g ffe+e74t7vposition due to a curved mirroreejvf+,pg:7t fq f 0k7/q q4yi.
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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 mirror, exactu1u26w 6 lg/hnai.uok5:/ey)bz rmu oly 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 mirrorx6 zci3 evj3m;dk)6 gw,*:iio+ s1yh+e kjeih's center of curvature. The image produced 3zw )6id6jie +mi1sy+kj3 exhe* vcikg: h; o,by the mirror 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 positioned8j.zd*i : gbte between a concave mirror's center of curvature and its focal point. The image produced by the mirror isezj i. b8:gd*t 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 mirro2.e4k o+2le p.jlqnnjf-md b5r's surface and its focal point. The image formed in this cas m. nn q.+oedpj2lekj5f-b2l4e 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 con+c ld,z+a*xvdkn7n ic*c:yo * vex mirror, at the same distance from it as its radius of zc+ *x+cd7on:y*d iv,kl*n accurvature,

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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, at*c6t9eh3tg3 uikr )ie c8wk 4b the same distance from it as its focal length,6 wbtgk e4 9h ck8)3r3uect*ii

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sometimes when you lo+3ozdal-ek7k im:jd +ok into a curved mirror you see a magnified image (a great big you) ak-i:melj z7++kdo 3dand sometimes you see a diminished image (a little you). If 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 p g.bovu:j4+0s l+ascimages 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,acdrsq* rly ) oz84.i 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 spheri2 a4blktu ,3iycal 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 vlsrisl lemp6x 835( dgy g3:0an image which is

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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 mirror m pptrgzw3)z q6)yz9vj;gij/ 8eans

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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 positive, the imag:u5cy0 qffi-s e 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 nebr6v o*yfup 8.od0t4(bc(q)jym8x hjgative, 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 pyolj8qo +*3ehv x 0e3fositive value, the 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 negative value, thew. auvupfj kc/ 3/2nb)twiv )3 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 m5jxh qy 8,ugmgc /y)-rjw- iinbo);d; agnification is larger than one, then the image isqyx cg w-8/)g-hi y)bour,d;n5 ;m jji

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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 magnification is smaller than one, then x4 nb;b9b(k;z:aj po pthe image iskppz bx9 ;j(b no4;:ab

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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 of the magnification is equal to one, then txjd 6sh s5 /: gt7xqaa-ugi0v0he 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 fastestmgv6 ebi/vx 5(

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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 refrac*w7tsmsb) /c )*xj(fnl l f qk3m2i7tvtion

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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 imply9yz.ipl 71z tmj p3mgw4ib3m/cvjf/q 7s; q4e

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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 di ,heztu w,f i.4ow.j1xamond 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 incidence 27ks c.(9vi 2htd0mx fm8hrbm

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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 refracte6jo/ wf /bzi*k3v* gv/j ):oqboz+ pqid

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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 water. The angle of refreb4u5c k7;5;ats unztaction 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 36j gtt6i*gcwtraveling 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 sazbq6 cz) rf-*-rl;vbased 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 from wate/okc5:4/)n xbwcj4 ccsr-y ojr 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 lej)mi 0.9u/m axcvm.zo9 flb;tnses work is

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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 calledq:4lhk* w e3yqq( 2q1 ybe(sjy

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lenses that are thinneznsbbhj 6:3gs2g,r fr9+ 8;*zt f plotr at the center than the edges 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 a mxa-: dv.v7d,,ccyiy d1xqz1 t the center

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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 ex4d g9+v blbbq)cept that lens B is rated at 20 diopters, whereas lens A is rated at 10 diopters. The fdv bb)g4q9 b+local 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 of a t 6eplf i5097gwcjb) eg(jff7 +9uh kfjhin concave lens, strikes the lens near its midpoint. After traveling though the lens, this ray emerges traveling obliquely to the axis of u+fc7ejfhjwgb5)( f6l 7f90j k 9epi gthe 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, strikbe1 qkg9kqhyr )e es ( o:v-qy/ahf7*.es the lens near its midpoint. After traveling through the lens, this ray emerges traveling obliq9b-y .eygh*kkq/7e 1qqhe)sr a ov(: fuely 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 d c,prvd28kru- /yrp3gue to a thin lensgp r8k rdc23u ,/-rvpy.
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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 lsx8 dxzi0o(nlw. a17 length $f$. 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 fos58jb(xh: ks34 njoar cal 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 lel;(vzkpg1o2xh-tu, o ngth $f$. 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 lengt(n.ct31fgn kn h $f$. 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 d1 ;knde+7bdle b( .kolength $f$. 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 ibgg ns3b 7rr:4ts focal point. The image formed ingr: rsg37b4b s

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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 v8)ggs: k3puep.qrf8concave lenses

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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 through a magnl;c thg1pel +6ifying 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 lamv 9z 72kc0iryrlan0u ypsy411 s.fr3e p and the screen is placed a converging lens of focal length 24 cm.a4if0s 1er2 zrcvky3ry91u0nlpys7. The filament of the lamp can be imaged on 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 len)tvnx56;h s oahjb-, jto.l 9sgths $f_1$ 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 ar6 :ukh.r wmhm5e placed in contact. If each has a focal length of 20 cm, how would you:6.hmhk muw 5r 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 c.oo6v7 a gpw.e4k3 e7ao6 ssea plane's reflecting surface with an angle of incidence of 6 . gweso e37a.p7o4e6acvsok $52^{\circ}$. 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 mirror. The iuo2fxt)m e+n i8, w8st-e+s jomage formed by the mirror jnxeo m8 u8os,swi+2f+)ett -appears to be

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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 you st pm:s 0o3viu95s4epipand 0.75 m in front of a vertical plane mi4pm 9uspsp:v o50 iie3rror?

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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 7y iz xoy*g9 e9b6dmo2you approach a vertical plane mirror aty2 xi97ob9 moe d6ygz* a speed of 2 m/s?

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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 frdit4b-q88a m cza5 j6,pte 8fpom the mirror is the focal 8j af- 8bm4d ,i5p6ttzea8q cppoint 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 a realgu 9;cv/q g efa 85-nsq-gx(dk image 30 cm from the mirror. What is the8d (; 9nc/qf--g kvqgag5su xe object distance?

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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 mirrozxpb5g z9 ;l,dr, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirrobx;,z pd 59glzr?

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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 concavezrux hj/9vai +-o6.lh mirror with focal length 3 cm. Where is th.9h6/ xlvra j izo-u+he image?

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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 :(kzlez x-)wl/ba3cl v2d -n u20 cm. An object is placed 10 cm in front of the mirror on the mirror's axis. Where is -ulwl2 cze -v)lzxk:/n(ba3dthe image located?

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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 9f)6w( a*0migexf/eyyen2a n 20 cm. An object is placed 30 cm in front of the mirror on the mirror'sn6) 9xyny(2g0 f/if aa e*wmee axis. Where 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 t/ef/kgr 6 1s5sm* jtdjrep(210 cm from the mirror. How tal *1 et (p6j2srt/kdgem rfs/5jl 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 mirror of focal length 20 cm. The obj;/rla+bcy, dw2c)as *ecc gg3 ect is 4.0 cm tall* +e ycldsgg 23r cbwacc;a/),. 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 tall. The image is 38.6 cm tall, and 14.8 cm from9 0d4qhr s4i1npvjx43hgrw* l the mirror. *rhsx j31 90viw pqrn4dhgl44 How far is the object 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 imagbq1hi3vgx ;.wxr) a,i-*e isgrhz79 pe is 4.0 cm tall, ho sb phiv1r- z)xa qr*g;. ,wi9gx37heiw far is it from 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 15 cm from a concave 8ke2wke/l*imn bi5c 3mirror of focal length 20 cm. The object is 4i5bekw8*l2ne 3 cimk/ .0 cm tall. Where is the 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 fro dz;m-x sl77s b:z5ekknt of a cosmetic mirror (concave mirror), the erect issdzm:kbz5-x7e kl; 7 mage is twice the size of 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 c .xp17qc/z acfm in front of a concave shaving mirror. If the image is an erect image 1.5 times as large as the object, what is the mirzq fca/. 17xpcror'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 concave mirror with focal length 5.sk)k0u4l5 *huwg 5wdoausuib-/f m hx4 :c1f ;0 cm. Where is tfkw*smld4sau4hu5 kuh) 5 guwib /10c;-fxo:he object?

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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 cm. An object is placed 10i l5 o f rnf3;ya,oy2najrj46. cm in front of the mirror on the mirror's a af.5jf3o;a oyj642r rnln, yixis. 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 hw;rj+i 0wmewf 4w:e)zr) o)plas a focal length of -20 cm. An object is placed 30 cml4j+e)ew)wri0pw r;wz:)m fo in front of the mirror on 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/ey+c m zc)f*oy oj k50-r/nzz-ybe7k front of a convex mirror. The image is 5.8 cm behind the mirror. 0ej)+yof/ crc5/zzky 7-k -bn yme*oz What 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 :epzvhep9) lo f8m3(wis 7.80 cm tall, and 14.8 cm from a convex mirrorvpe :lwz3)9m oh e(8fp. 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 an index of refraction of 1.50, what is the cy h-qg16c0/ivlf4v wspeed of light throughlv 4wc1/cgiv0 q6- yfh it?

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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 anglr l z: :qc;2hxfp g4*kbyj ;nssrm2,x6w0 mvt9e of $45^{\circ}$ 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 substance from air at ane2r89 jeux+t . ynpks7 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 any rt(88uxq/a dz;x0rx angle of $17.0^{\circ}$ 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 th+* q vrmlk)ql te(pzd5x:r*s(ick is spread smoothly and evenly over the surface of water on a windless day. What is the angle of refraction in the water for a ray of light that t+)xqpmzq* srv: (dl(rl5e k* 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.)

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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 surfa4,rf 5 o.bjzv r5)qepyce of a still pond of water. At what angle must the diver shine a beam of light toward the surface in order for a person on a distant bank to see it? (Ther vrqy, fb)e .p54oz5j 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 inz0xv5 uc4mw8 *l 4spfcvc6uy. air, strikes a plate of transparent material at an angle of incidencmsz8 c6f4 p*vv 4 0uucc5xyw.le 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?

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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 b hsvg88 j p.nyp tu80+d9a9ypmaterial. The incident beam ag8hbuyjdpp vt.n0y 89 s98p+ and the refracted 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 is passing through it at lh y(:g d .i7vo8g;(inh 29pmgekmi:n (k 2 o.p ; nd9nmh:(:iygeii8lh7m ggv$53.0^{\circ}$. 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 traveling from crown glass 43s.u5+ty ra .ji o5a qtwf6gjys4 6cb(n = 1.52) into .a faq6+y 354joru tsywj s45g.bi t6cwater (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 refraction of 1.50. What is its critical angle of in,ixf66 ltl9hv cidenx,l6i h6v9 tflce?

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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 a gkek0q5p2v4)d9x3+ fjhoajkb v1h:index of refraction of 1.50. For what angle of incidence will light remab3 )+9e fkxq4 g kjh:5kavjpd0 ha1vo2in within 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 w-zg1,cm:0 mcl-sc (7ffo jq isubstance 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 substanc0(fm52v, zul 7tw u z-:d5qbtnqd yr,pe from air at $30.0^{\circ}$ 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 longx8of :k xfvmp/6 tj6ry+(y iy6 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 i rpy6y68v ffk jytx +o6m(:x/number of reflections a light ray entering one end will make before it emerges from the other 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 cm in front of a 20 cm focal length convvi 0ftd np6,+o)zj4lshh :d m*erging lens. How far is the image of th:+d)d,tslph fvo4n*0zi 6h jmis 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 (lfq +2tf,jlm n/d+q zap3cpi0;+b7 h(qmr uf with focal length 4 cm. Where is the +pbcu/3((if0 jn t2qmhzlqqml+;a fdf7rp+,image?

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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 fronzlf vj9f i-c9cid(75 ct of a converging lens, and the image is 4.0 mm behind the lens. What is thclfizc79 icf5- jvd9(e 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 mm from a converging lens. If the image is 4.0 mm tajh +k;xo6h im 4.ylff+ll, ho4;o lyjhf+f kihxm +.6w far is 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 1fbgz 5i+c8 wn g8bxo)a converging lens the inverted image is half the size of the object.nwg 8ofib)x1c5+8 g bz What is the focal 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 front of a converging lens with focal bev6f)/m1ash length 5.0 mm. Where is the objecbef /ma61hs )vt?

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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 10.3 cm from a converging le1h,e - fw0rr0 hfq; )mbw7pt fqcf:z3gns. The image is virtual and 6.2 cm tall. What is th0q7f01,qpwer) g :h-;rwfft fb3 mcz he 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 4.0 mm ml819+ tsu wya8d(sxutall, and 9.0 cm from thed(wtl 1sa8+ym u98uxs 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 placed 60 cm from a converging lens, it forms a real image. W7af o5t3yl(pphen the object is moved to 40 cm from the lens, the image moves 10 cm farther from the lens. What is the focay(7 3top fp5lal 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 g))+n35neg bvzbbyte3:* mrh lens. The lens has a focal length of 10 cm. What are the values, respectively, of the image distance and lateral magnificatth)yg5rznb 3:+)b 3gevm n*eb ion?

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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 f. *fbg7jm/f)djqjr r yn29 kp9ocal length of 10 cm. What is the image dista*gjpr / f2bf)yr9j 7nm9d j.qknce?

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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 kh+:qb ow.e-qh9fd f7y (* v ntxra0r(in front of a diverging lens with a focal length of 10 cqh-xbn9( fv:o+e(t.hq r*0 r kwfad7ym. What is the magnification?

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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 ./ez ),fsx4ehr,ot bz4.8 cm in front of a diverging lens. The image is 4.0 cm from the lens. H)4hrz b/xz e,es.fo, tow 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 k +i vy,gp.z,wof a diverging lens. The image is 2.5 cm tall, and 7.5 cm from th pzkwy,.,+ig ve 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 thiwpjt6hz/*8;p)aug uov0lk- u n lens. If a virtual image forms at a distance of 50 cm from the lens, on the same side as the object, what is the focal length of *8w-kh j0glupovt;uzu 6/a)p 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 s zn,z2 8d5scgobject be placed if it is to form a virtual image magnified in size by a factor of td8g, ssc52zzn hree?

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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 camesdow9g.w,f 1 jras, must an object be positioned if it is to form a real image magnified in size by a factodw,g 9 wosf.1jr 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 len:qxqul wo64g3 f*w;a;t :xmxwgth 20 cm, are placed in contact. What is:w ;af3 6 ;xtxmol*wg w4xqq:u the focal length of this compound 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-convex) thin lens has mmtm4; ixkcw4fgw-c5 b *mf:ft2l3v cnj07 o8 radii of curvature 46 cm, and is made of glass of index of refraction n = 1.60. What is the ctl-f mv jb7f t 2c*k fn3om8w4mic5: wg4xm0;focal length?

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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 glttqy36iqrq y i09g37gass (n = 1.50) has a radius of 40 cm on the front side and 30 cm on the back side. What is tgtq3gyi3r6it90 qq7y he 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 formed by using a piece of plastic (n = 1.70). The ranp8z6a b:u*-rxj+g il +ew fv,dius of the front surface is 20 cm and the radius of the back surface is 30 cm. What is the focal length of the l6ugawej-zl+bfp 8x vnr ,:i+*ens?

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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 len hrs01vzen4(ahc/ 6tdgth of 40 cm. It is made of glass of index of refractioze0 hcdt1 rv/n46 ha(sn
1.65. What radius of curvature is required?

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