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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 ( o7nyedi7bjv gxc8r eo0ep/a(i9 47nthe formation of images by mirrors and lenses has been successful describedio8ecea/o4y (ni jn7d9 7vrgx 7e(0bp 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 incidenm/l6lgp /kfw* .mmbjr8y8.w ece

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The principle on whic)emmxir/f 0 r1h 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 imip5 s*y dau5k3 .;nsymage 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 images wwu;3 gt* 6s7rdf;h7hpkux+zk hich

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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 the light rays do not actually pass through the image loe2,f g0ik(l j8emmis-cation, and would not appear on paper or film placedlm,(-igjief 82ke ms 0 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 pass through the image location, and could ay za9 121*8km-tet5pmgktsl nppear ont*9ps1 ga 2kmkem -lt18y5ntz 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 imagei31ssi-lj ; vc+.ytlv ?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spherical mirror on2qev;26s wk ly which reflection takes place on the outer surface of the spherical shapels6qkw y;22 ve 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 takes place on fq26nnxbex)iv7 sthh62p8 n* the inner surface of the sphere is referrhnsv2nbe 6q6x2)8xftp n ih*7ed 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 n aq8tj-m l*z3of 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, -/r(+.dm ratut hjc6b,8hfke-k1 u ikstrikes the mirror's surface near its midpoint. After reflection, this rayra/18m k f-rebt (+uj6k.h dk cthi,u-

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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 mirror on ai g9ib ro63r,5mad 9xa 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 axis, crosses the axiujls msk3j/965q q hrt;-ve3ns at the mirror's center of curvature befort-s;lnu m 93/ehjr6vsjq k3 q5e 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 t(66 9vy m qk5jsk-hbpghe center of curvature is r66y pm qs9ghk-(bk5vjeflected

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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 ;euqta 3:k6)t;(z hx 4 qndv2u;aus awsurface, crosses the axis at the mirror's focal point before striking the mirror's surface. After reflection, this s3k;w:an;;ueu6 24z( vqqxh tu adta) 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 point isfbu 3./x. scrr reflecteds x3.c/f .burr

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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 finding6 6p0h3bbv qtu the image position due to a curved mirrouvp36 q6t0hb br.
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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 concattt6ub 0- 1haive mirror, 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 imageap1 w q9-f3lbs produced by the mirror is located l1ap9q-3sfwb

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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 anfx:an litw/ a3el;v5sr; xt1 dv/ r.o(d its focal point. The image produ;v;.f1sx vwlr xi/nt3a e/l:da5r( otced 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 bet7p/:rack,* 9 17 b utt; toy0btzpchphween a concave mirror's surface and its focal point. The image formed in this btckbh9po pttz;p, ut*/ h ya71 :0cr7case 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 n )cbvdf31fw1same distance from it as its rafc) bd1 3vf1wndius of curvature,

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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 the same distance fz)ft4:a dl5ag 8f0 ;wk+z1tcv :xnipdrom it as its focadvanfd05z8) ac ;i14: :pzgtw tf+lkxl length,

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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 magnifiedbv cu cy/2i)ok0-b4l qql 38+v ebem9p image (a great big you) and sometiibl/ub3kcb) m+90lv p2oqy 48- cqee vmes 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 mirrtfn8jz t0f 4b)fy r0f 0)dukm p;)ly6cors produce images which

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Convex spherical mirrorsctt 6pin vq,v 4i;; l-1etlip5 produce 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 spherical mirror produces an imah4-ax1py7mb7gp hv+yg zog ,2ge 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 6f0ggx/t :pea7ky h7i produces an 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 meansxvs 4su)u akt8vr-q)2

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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 image formed i5r y3bym+xd69o /j jqjs

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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 negative, the imwzrsy9r2(/ dr age 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 post8clnk+ch s w.m 2f 3*tuk;wt4itive 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 gofb9ua(g q8b qeo7icp8 l0-7value, 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+bsbvs; * 7+b8;tfjg tsgn00snbo6g e magnification is larger than one, then the image isf; t+n s b*soetgs0+sbj07g6v ;ng8b b

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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 the imest+ii6 9q. ,fhv1iptage is 6ish ,tp .i9v+1ifqte

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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 magnificatio5om hml nt 5j+7qt1ks*n 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 fastes, : hu,: 3w4kfrclfh(rl)jz mgt

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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 ohxy ,f7 sli4k40 pzz+ mgtz9a7f refraction

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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 less7.oas b9vy jw 9wejz)7 than one for a medium would imply

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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 diamond.,8x zc*s iouniv4 sb7 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 +rv(+uppylr zkqvo(93 *p-f+;nya ga

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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 wtr/+ xe gds ,yj9c.y6denser medium is refracted

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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 ozzj opo5+f42 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 travel ystg3v;faa4;ing 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 bas )i7-bi9j bqcced 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 waterya62mh+rl/+66p psp; powxne 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 work5 a pr-myr.quuhc0:s 4 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 ca4qpeyrs8rlta( my 6 .8aco a30*uu9txlled

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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 edgc9 y8bis/+asyo /: gvses 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 asny1b6:9n1r+u ibi cw 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 except that lens B is rated ahe4v( ww0l(zf t 20 diopters, whereas lens A is rated at 10 diopters. The focal len 0(fh4wzwl v(egth 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 thin 4b6 4di1y uzatconcave lens, strikes the lens near its midpoint. After traveling though the lens, this ray emerges traveling obliquely to the axis of the le1bat 6 4yudiz4ns

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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 th1+ v u0pzhv kg/5nco2din lens, strikes the lens near its m g2 v5uv c/opkd0+1hnzidpoint. After traveling through the lens, 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 positieeh3b bo:s/niv -z4g 2um 4ya+)ax0cxon due to a thin lei u4+ee30axom :an)vy - gcsb4x bh2z/ns.
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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 foc0t 5ss(.2yrbm dhfbu +al 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 focargyr r96;cc6v l 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 focaq7 erdk( (k2djyl mtk.+;5loc l length $f$. 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 lenghgjh,lo0 m 31yth $f$. 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 foc h0gcr yg,-fpqvgue2 ,0ljn4. :to xc0al length $f$. 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 betwelohw (0t. k+ahen a convex lens and its focal point. The image formed i(0t .kl howh+as

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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 2pqsp2 wz1ts5 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 throu0zcbh9c 8zbc(gh 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. Between9a thn/hybv,m8g, b5wuk;xw d(;pnc 9 the lamp and the screen is placed a converging lens of focal length 24 cm. The filamenht,pb;(vg, 5 y axmnbwkcnw89 ;d9h/ut 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 lengths qc2q5orecmr64x a3pn6ftp c a7w9.g / $f_1$ 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 (conveh;vg;yhv,fiu q+32:a/il dado m5/p g x-convex) lenses are placed in contact. If each has a fov lh3gp+qvhy:;d2,/o 5i/f a muagd;i cal length 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 a plane's reflecting surface with an angle of incidenvp 29roy7rv /kce of kr2v /vyrop9 7$52^{\circ}$. 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 2.6igi/ mlj4im8c a6rs2orjz.1( m in front of a plane mirror. The image formed by the mirror appr( 41 r6o/jii2iamcsml8 gzj .ears 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 wc ea3hb 3j1/ +wmz:+pjambd ,h puhd;b99ou n9hen you stand 0.75 m in front of a vertical plane :b9bp3ndu3a;m +u/chjda+ w ehm, 99zoh1jpbmirror?

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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 amn-hgef8fe nr7 /5bo; vertical plane mirror at a sfgo;fhm e87nen-5 b/rpeed 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 rf e28oyfxh ne5os5 1j)xm 7l;ladius of curvature of 20 cm. How far from the mirror efx75;)2oxjy5lhn me1so8 lf is the focal 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 crea7: jwvna9 fy.ytes a real image 30 cm from the mirrj:79 aw.n yyvfor. What is the 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 mirror, and the image is 3.0 cm in g9ezsdafx. +8drleqhw -: x4u:8i*kh frontxl xhg:dweque z* 8sd.4ka:rhf 8+i9- of the mirror. What is the 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. Wq+j+52pe-0uvg z8-r r xmdbzjhere is zu r58j+zmp e0vrjg-q-+2x dbthe 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 lenh)fmf2ip 9o9) )ayr;xmz6dev 9wmdl +gth of 20 cm. An object is placed 10 cm in front of the mirror on the mirror's axis. Where is tl) m)d+ofmxwf hp9 a9 dzv269yei;)rmhe 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 20 bbl.h k3)ti:u cm. An object is placed 30 cm in front of the mirror on the mirror's :h i.kul) b3tbaxis. 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 ybol8;n4lo )xa concave mirror. The image is 4.7 cm tall, and 10 cm from the mirror. How tall is the xo )l;84nyblo 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 c3xq6ewx 6c60mkda7p uoncave mirror of focal length 20 cm. The object is 4.0 cm tall. How tall is the image6ep7dqxk066au cwxm 3 ?

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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 tallyhvst6a)804b3i,u llbs5 6.y hvt*ycpj hwd - , and 14.8 cm from the mirror. How far is th 6l lbi4* ,sywtp0.h8hs6cua-v5yvj3tbd ) hye 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(orwv1,3akzyyp sms63mae ,. image is 4.0 cm tall, how far is it rs13kz p,ym6va(s. y3ow,ea m 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 mirror of focal length 20 cm. The ob vgpd1n1usl- v7cx54aa:j2 e mmoff9.ject is 4.0 cm tall. Where is the image locatj24.o 1-e xnvlsf1 pafduv :am79g5cm ed?

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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 mirrork5 c+0b tc.vfp (concave mirror), the erect image is twice the size of the object.bc. v+f5cp0tk 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 ofl)h4meu* + f *cm 9iftf93ufcp a concave shaving mirror. If the image is an erect image 1.5 times as large as the object, what i*mf9p tu9c 3*fe4hfuicl)m +fs 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 concave mirror with focal lenf) gl6p +zs,2a sj8hphgth 5.0 cm. Where is th)h sgl6pz2fs+p a, 8hje 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 objecc (r6u udiz :(uwbe,h4t is placed 10 cm in front of the ueu c ih4:dr(b 6,(wzumirror on the mirror'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 fo (/9 mde,bh; s9qaffcncal length of -20 cm. An object is placed 30 cm in front of the mirror on the mirror's axis. Where is thened9; q ,mf9sba cf/(h 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 conkx +oqprx h:w 5j*r/3d+4ynp bvex mirror. The image is 5.8 cm behind the mirror. Whaxp/y5r+qok +b:p 3 *jn4rhwd xt 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, and 14.8 t)08t5clvw4snb:c pc fn*jn)cm from a convex*:cl v5c4jtnn bn)s 8wpf)ct0 mirror. 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 9 l6g/e)kwn kc 1cg eg)1rmtlt.uu28j speed of light through it?)w2r1l6k.nkeg eut ug)t81j9 /gcm cl

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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 incipotd718y+b ,ij8 )m em0va goident on an 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?

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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 an anglw8eg4 ,bdx (.dc)kyt,wul: me e 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 of .ze9rb /qi7whl-n k 6b$17.0^{\circ}$ 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 smoothv zyj q4 zpr2dum 4)0ld;n;.mbly 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 tpynr)mzm;d;2.vju0 bz4 q4 l dhat 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 surface of a still pond of water. At g;7jol1-k hpbv / bm1dp2-cxe 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? (The indeckbp;jv x b p27hle/-d-og1 1mx 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 plate of t;hp -o. . y/xjjcswgjo 6can -pa(ly6yjx1(,i ransparent material at an angle of incidencawj apix;s,( hl.xy-/y njcooy6p6gc . -1jj(e 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 v1o 8ab iwnl6;incident on a slab of transparent material. The incident beam w1lb ivn;8ao6and 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 pass)jey :v n4j,t)aiy*ny ing through it at 4 ievyy, *tnj) )jy:na$53.0^{\circ}$. 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 (n =rp 80rqy8 dtk: 1.52) into wadqp:k r 088yrtter (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 incid 5 lw+.;kwqxs5: ncgvjence? vx5:wsng +jk.c5q wl;

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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 index of refraction of 1.50. For w; )chz3 qef on4-3wbmbhat angle of incidence will light remain witqc)hn w-b3z 4omef3; bhin 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 substance is meaj)nf j:tu5a g;,r7 srlsured 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 at qq y0(m7n dp/rv;q(r9rp b; zf$30.0^{\circ}$ 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 long ands(pw 5x8otg:fen6kyx7/ :u ce has a diameter of 20 mm. Its ends are perpendicular to its /k xe(tunso8p:ge5wy 6xf7:caxis. 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 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 fronyf1. 0+dqan t 59md fxzfjb8d2t of a 20 cm focal length converging lens. How far is the image of this object from91d +zx.5djb2fq8dy0mn tfaf 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 with focal lengi6r .6an f4sf(uqph 8rth 4 cm. Where qru6n f4fas(ih r8p.6is the 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 front of a converging lens, and the image is 4.0 mos0 )bt i;j(xem behind the lens. What )s0;xbeioj t(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 mm from a converging lens. If h shw,:wj(01 d)jr9 gdjlz8esthe image is 4.0 mm tall, how far is it from tdherg:1zj9 w jd, 0)8w slsjh(he 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 obbt svgj/b4+xk7p 4d8;jg* dccv c b+;f a converging lens the inverted image is half the size of the object. What is the focal length of gtpcs;*8 /+ ;vvd bjjb+4dxc7ckg4b b 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 fx8afjnnr ( -g2;,bf+c eond/o1vq.gh ront of a converging lens with focal length 5.0 mm. Where is th;a 2,vo1-henq gcr/fj8donb .xg(+ n fe 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,/vwx;(p 0jrtl/. 4 p +cq,- trcuyvyei and 10.3 cm from a converging lens. The image is virtual and 6.2 cm tall. What is the focal liyex/t-(.tv,prr0vlw;q+4jc c y u/p ength 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 imagerb ;; uh;v).ht(djlc z is 4.0 mm tall, and 9.0 cm from the lens. How tall is thu(lc;j hhd;. ;)tbvrze 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 fromw ir .b3 whze375jfc5d 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 from the lens. What e.wdwijbh 57c5f r3z3 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 convex6/klvg7r q7o 5csneqg ;c5ds, lens. The lens has a focal length ofn;ed s5,c/c7 sqrk gv g5q76lo 10 cm. What are the values, respectively, of the image distance and lateral magnification?

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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 diverl fu)gda.u*-z ging lens with a focal length of 10 cm. What is thau .u)-z*g dfle 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 diverging lens with ajyr pw(b :6+eyp2pi a 7;makt3 qieh01 focal length of 10 cm. What is the magnifiae+0ai 73r1hjtq(; p6ym2pipew y:kbcation?

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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 diverging lens.3 z9) k*p0z 2jrluqeg2kc( nsf The image is 4.0 cm from the lens. Howjgf zk)s290r2(3lcpze q k n*u 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. lvw(hg u-b/z3*uwt 4 o The image is 2.5 cm ttgb3-lw4zv/(*o uw uh all, and 7.5 cm from 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 lens. q(sb h6rs. va. If a virtual image forms at a distance orh 6svb(.sa. qf 50 cm from the lens, on the same side as the object, what 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 50oeqt(n895q 9dgp,*b 3xaiv db mm must the object be placed if it is to p*qn9d9 oqa bg t(vi 5,xe3db8form a virtual image magnified in size by a factor 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 cameras, v33kf:v hlpx jzu/;:/j,h xlimust akv3 l,x:3x;z jhh/ /pl u:jfivn 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, arx34jkzf+r 3d6 sq 1jdre placed in contact. What is the foca64q3 sf+k3xj d z1rdrjl 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 radii of curvature 46 cm, and ihhta ,m 4nnd41s made of glass of index of refraction ndta,4nh4 hn m1 = 1.60. What is the 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 glass (n = 1.50) has a radius of 40 cmg r)k6-41+wvzezvf7 qdfqfh+ on the front side and 30 cm on the back side. What is the focal length qkz46 )w-1h+gr7ffq ze +dv fvof 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 6vbf;wu8c po;0l-nqz 3nda;h) 8 zjhvpiece of plastic (n = 1.70). The radius of the front surface is 20 cm and the radius of the back surface is 30 cm. What is the focalfdnlah ;3 vz)6c bp8j;zw v0oqh u-;n8 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 t;-a4ah hjz2dof glass of in-t4ahh djz2 a;dex of refraction
1.65. What radius of curvature is required?

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