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习题练习:The Wave Nature of Light



 作者: 王信东Wood发布日期: 2025-04-16 19:37   总分: 120分  得分: _____________

答题人: 匿名未登录  开始时间: 04月16日 19:35  切换到: 整卷模式

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1#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Does Huygens’ principg1 s u-h9p)vpple apply to sound waves? To water waves? Explain.
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2#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What is the evidence thatv y8e,cr:j-s7*lp tq 3erg6hv light is energy?
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3#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why is light sometimes described as rays and sometimes as waves?4eli c x-em)- /olrq*fon6wf -
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4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
We can hear sounds around corners, but we cannot see around cornerjp n5w anfn2 (+zh+oo4 +gqvun 4b:i2ws; yet both sound and light are waves. Explain the differen(j2 n 45f4qi: n2pnub+w+az+ogvw ohnce.
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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
If Young’s double-slit exp e zr5kpvfi 3g824nlq3n(opc2eriment were submerged in water, how would the fringe pattern be chppo(zi2rn 3 c2gnkl53qv84feanged?
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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Monochromatic red light is incident on a double slit, and the interference pattt e xo4(8)fglkern is viewed on a screen some dt)fg(xk4 le8oistance away. Explain how the fringe pattern would change if the red light source is replaced by a blue light source.
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7#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Two rays of light from the same source destructively interfere if their path len2/po5rn1a l+ fiii +ud4rzr2+ miop 5bgths4rib p5 2+ ou mpiaf/15il+2rr dizn+o differ by how much?
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8#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why was the observation of the double-slit interference pattern more conv f3gpgm0 px, 3kf dkh4;jojtua i*4o7:incing evidence for the wave theory of light than tf x37 j,m*;kua fk0pdgjto4i:gh34 ophe observation of diffraction?
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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Compare a double-slit experiment for sound w9 -c9jy0u xnxdaves to that for light waves. Discuss the similarities and differenj9dn 9cx-x0uyces.
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why doesn’t the light from the two heo .s93*4dvi f2quguop adlights of a distant car produce an interference u. gq3poi9ou f*4d sv2pattern?
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11#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose white light falls on the two slits of Fig. 24–7, w2 bdpa:(rr9s :yq )tsbut one slit is covered by a red filter (700 nm) and a ) 9ysrdsqtr(2:pw: bthe other by a blue filter (450 nm). Describe the pattern on the screen.
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12#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
When white light passes through a flat piece of window glass, it is not n+kgh2 *9x kczbroken down into ck +kh92gxzc n*olors as it is by a prism. Explain.
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13#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
For both converging and diverging lenses, discuss how the foc 1x4b3fwg ub+s1iu3 lhal length for red light differs from that for violug xli13u 3b+s h1fbw4et light.
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14#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A ray of light is ref 9wnr6e5r7 sc 5alg0peracted through three different materials (Fig. 24–55). Rank the materials a5crlg 07arws659 eenpccording to their index of refraction, least to greatest.
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15#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Hold one hand close to your eye and focus on a dns aj12s- o1k0b1j ;bwywod u)istant light source through a narrow slit between two fingers. (Adjust your fingers to obtain the best pattern.) Describe the pattern that youw0 aywj n)du-b1o11ks ;o2jsb see.
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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What happens to the diffraction pattern of a single slit if t2gk nm-2tyvclmu4-9:nt g m 5whe whole apparatus is immersedmlg -k59my nmnut w2-c:2gtv4 in (a) water, (b) a vacuum, instead of in air.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
For diffraction by a single slit, what is the effect of increasij: 2rrds7le6s ng (a) the slit width, and (b) the wavr: dr2s76 esjlelength?
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18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What is the differenl k76o5a uqh0 u hahcd*y*f cv-8du:)ace in the interference patterns formed (a) by two slits $^{-4}\;cm^2$ apart, (b) by a diffraction grating containing $10^4lines/cm$?
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19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
For a diffraction grating, wham7i3y id zyr(jme,m87 t is the advantage of (a) many slits, (b) closely space7mmz,r(y3me 7i d iyj8d slits?
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20#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
White light strikes (a) a diffraction grating, anvl )8 gqpyx*)p11 gqded (b) a prism. A rainbow appeary 8e qv1pgdg)p)*ql1 xs on a wall just below the direction of the horizontal incident beam in each case. What is the color of the top of the rainbow in each case? Explain.
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21#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
For light consisting of wavelengths between 400 nm and 700 nm, incident normal22s:11*hvmu8 *ynabq)m.g efj c ckhqly on a diffraction grating, for what 2e :1qf)cq2c kbjmvghm s**8ahy1 un.orders (if any) would there be overlap in the observed spectrum? Does your answer depend on the slit spacing?
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22#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why are interference fringes*c3 uauo8+. g-:jk uz t9pvcbh noticeable only for a thin film like a soap bubble an:hao. jb *u8cpkv9 u3tguc +-zd not for a thick piece of glass, say?
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23#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
When a compact disk (CD) is h2rjp.(k/azax q k i;w/eld at an angle in white light, the reflected light is a full spectrum (Fig. 24–56). Explain. What would you expect to see ;a j p.xq/kki(zw/2ra if monochromatic light was used?
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24#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why are Newton’s rings (Fig. 24–31) closer together farther fro7,,6w0qmjys6ouodx .xkhu 1 z ffiv.2m the center?

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25#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Some coated lenses appear greenish yellow when seen by reflected light. Whatj:gl9nm 7;* ywoa 5dop wavelengths do you suppose the coating is designed to transmigp 5do9onjw: lma;*7 yt completely?
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26#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A drop of oil on a pond appears bright at its edges, where its thicklysf *6w4z85 n6;ex5cw/w1nqujoq ol ness is much less than the wavelengths of visible light. What can you say about tqs;nnqc*5jef8zu y16l5/o6ox l www4he index of refraction of the oil?
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27#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What does polarization tell us about the natur2qqo8 x gcjv1d/vcd.7 e of light?
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28#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Explain the advantage of polarized sunglasses over normal tinted sungla28m xu1.l)y+ou63igymyvd p psses.
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29#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
How can you tell if a pair of sunglasy0iqkk* ur )+lses is polarizing or not?
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30#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Two polarized sheets rotated drpi) ct /uqdvzi.d,0 ;yf03mat an angle of 90$^{\circ}\,$ with respect to each other will not let any light through. Three polarized sheets, each rotated at an angle of 45$^{\circ}\,$ with respect to each other, will let some light through. What will happen to unpolarized light if you align four polarized sheets, each rotated at an angle of 30$^{\circ}\,$ with respect to the one in front of it?
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31#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What would be the col/h ;lp+h 8ehjaor of the sky if the Earth had no atmosphere?
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32#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
If the Earth’s atmosphere were 50 times densero3*km:ty .l,y2vxvai+uh s1 d than it is, would sunlight still be white, :.svl2 k x,uoh+ y*1di 3mtyvaor would it be some other color?
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33#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Monochromatic light falling on two slits 0.016 mm apart pgbvri)ywe9 n6 qv;1l6roduces the fifth-order fringe at an 8.wlen r6)v viq91gby6; 8$^{\circ}\,$ angle. What is the wavelength of the light used?    $ \times10^{-7 }\;m$

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34#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The third-order fringe of 610 nm light is ob vpr92nwayzc w v90t9.served at an angle of 18$^{\circ}\,$ when the light falls on two narrow slits. How far apart are the slits?    $\mu m$

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35#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Monochromatic light falls on two very narrow slitss635yxz g bb0h 0.048 mm apart. Successive fringes on a screen 5.00 m away arez b3g5 xsbh6y0 6.5 cm apart near the center of the pattern. Determine the wavelength and frequency of the light.
$\lambda\;=\;$    $m$
$f$ =    Hz

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36#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel beam of light from a He-Ne laser, with a waveleng9 q6)5hx )k1 ivw0vjypxd+blpth 656 nm, falls on two very narrow slits 0.060 mm apartxyi9q0+jb6)v h)1klvxd wpp5 . How far apart are the fringes in the center of the pattern on a screen 3.6 m away?    cm

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37#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light of wavelength 680 nm falls on two slits and pr( )ol,/ r-pqk.vtrxtioduces an interference pattern in which t/ioplt-. (rqkr ,x)vthe fourth-order fringe is 38 mm from the central fringe on a screen 2.0 m away. What is the separation of the two slits?    mm

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38#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 720-nm and 660-nm light passes through two slits 0.58 mm apart, hodcu 57jld3 q7jw far apart are the second-order fringes for these two wavelengths on d 77c3q5ljd uja screen 1.0 m away?    mm

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39#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a double-slit expe:7bmwd op;qvg lx p/5,riment, it is found that blue light of wavelength 460 nm gives a second-order maximum at a certain location on the screen. What wavelength of visible light would wgv; 7:bop/mdq x5l ,phave a minimum at the same location?    nm

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40#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Water waves having parallel crests 2.5 cm apart pass through :qtprg o,y;/sqwip50two openings 5.0 cm apart in a board. At a point 2.0 m beyond the board, a:sowyqt i g0rpp/5;,qt what angle relative to the “straight-through” direction would there be little or no wave action?
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41#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose a thin piece of glass is placed in front of the l uy-rm yz.0yw2fjhiqp7 j2 9-bower slit in Fig. 24–7 so that the two waves enwuyjjmf -29yz p2hy 70br iq.-ter the slits 180$^{\circ}\,$ out of phase (Fig. 24–57). Describe in detail the interference pattern on the screen.
24-7
24-57
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42#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a double-slit experimes9p5 (i0c q 3ght,dtxdt:enxagi )13 ent, the third-order maximum for light of wavelength 500 nm is located 12 mm from the central bright spottdd, 3hia59(0si :)xnc1gtep q3x get on a screen 1.6 m from the slits. Light of wavelength 650 nm is then projected through the same slits. How far from the central bright spot will the second-order maximum of this light be located?    mm

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43#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two narrow slits separated by 1.0 mm are illumic+( xu.jrly .snated by 544 nm light. Find the distance between adrxc.s .jy(l +ujacent bright fringes on a screen 5.0 m from the slits.    mm

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44#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light of wavelength 480 nm in air falls o*0x*yqzh )ouvj/+hez n two slits $6.00 \times10^{-2 }\;mm$ apart. The slits are immersed in water, as is a viewing screen 40.0 cm away. How far apart are the fringes on the screen?    mm

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45#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A very thin sheet of plastic (n=1.60) covers one slit :ann0 hr)r)up ;2 kun2aftbx-of a double-slit apparatus illuminated by 640-nm light. The center point on the screen, instead oxf; )-)n 2rbra0nkuntup2a h:f being a maximum, is dark. What is the (minimum) thickness of the plastic?    nm

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46#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  By what percent, approximately, does the speed of red light (700 nm) exceed thaas93-dj mnm63xw1m)mvx .y mk t of violet light (400 nm) in silicate flint glass? (See Fig. j x3mmx9ywm)madk3.n6 v1-ms24–14.)    %


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47#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A light beam strikes as,:w0c vwzeo 2j 02+vyelr j*d piece of glass at a 60.00$^{\circ}\,$ incident angle. The beam contains two wavelengths, 450.0 nm and 700.0 nm, for which the index of refraction of the glass is 1.4820 and 1.4742, respectively. What is the angle between the two refracted beams?    $^{\circ}\,$

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48#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel beam of light contain mqcra2 5cl47grc..,zz7 llbnk;1rp hing two wavelengths, $\lambda_1\;=\;450\;nm$ and $\lambda_2\;=\;650\;nm$, enters the silicate flint glass of an equilateral prism as shown in Fig. 24–58. At what angle does each beam leave the prism (give angle with normal to the face)?
$\theta_{d1}$    $^{\circ}\,$ from the normal
$\theta_{d2}$    $^{\circ}\,$ from the normal



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49#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 580-nm light falls th i:l )1pym:tl4 p-vhrjj,6zon a slit 0.0440 mm wide, what is the full angular width of the central diffraction t4ml1z yhp6v:plj)jt-:,hri peak?    $^{\circ}\,$

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50#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Monochromatic light falls:.rg 6tj*ya n mhuyf a;:*oj+d on a slit that is $ 2.60\times10^{ -3}\;mm$ wide. If the angle between the first dark fringes on either side of the central maximum is 35.0$^{\circ}\,$ (dark fringe to dark fringe), what is the wavelength of the light used?    nm

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51#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light of wavelength 520 nm falls on a slit t :f 6nlbopcr,9t6sxu/7 m adi6hat is $ 3.20\times10^{ -3}\;mm$ wide. Estimate how far the first brightish diffraction fringe is from the strong central maximum if the screen is 10.0 m away.    m

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52#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A single slit 1.0 mm wide is illuminated by 450-nm light.4ue.v f pb7yg1 What is the width of the central maximum (in cm) in the diffraction pattern on a screen 5.0ey74u bgp1f.v m away?    cm

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53#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Monochromatic light of wavelength 653 nm falls on a f:oos;u-ds(dg ti) 4(ejsv0q slit. If the angle between the first bright fringes on either side of tqg:o)4i(stvd0feodsu ( ; js -he central maximum is 32$^{\circ}\,$, estimate the slit width.    $\mu m$

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54#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How wide is the central diffraction peak on a screen 2.3s+yk vrh8rhh8/+l6a v cibb d3wgh +490 m behind a 0.0348-mm-wide slit illuminated c9vbh6vhihs b38hragkd+ 8w++ yr4l /by 589-nm light?    cm

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55#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When blue light of wavelength 440 nm falls on a single slit, the qn//gy) zd9na:hs pf7first dark bands on eit s/apn y)fndq9 h7/gz:her side of center are separated by 55.0$^{\circ}\,$. Determine the width of the slit.    $ \times10^{-7 }\;m$

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56#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When violet light of wavelength 415 nm fm:ec. i8fc -szalls on a single slit, it creates a central diffraction peak that is 9.20 cm wide on a screen that is 2.55 m away. How wide is8s ecizcm. -:f the slit?    mm

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57#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a slit diffracts 650-nm light so that the h 82p wxjc: 9yyad2fc4diffraction maximum is 4.0 cm wide on a screen 1.50 m away, what will be the width of the diff428ap9yfj2cwd yc x:h raction maximum for light of wavelength 420 nm?    cm

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58#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
For a given wavelengma4 9kes,jlx-/qjbw vp- fe ;s3a ky1/th $\lambda$, what is the maximum slit width for which there will be no diffraction minima?
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59#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what angle will 560-nm light produce a second-ordy90e,cjw)pn f er maximum when falling on a grating whose slie 0,yj)9fcwp nts are $1.45 \times10^{-3 }\;cm$ apart?    $^{\circ}\,$

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60#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A $3500-line/cm$ grating produces a third-order fringe at a 28.0$^{\circ}\,$ angle. What wavelength of light is being used?    nm

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61#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How many lines per centimeter does a grating hrspb, je.1; fl3y,is bb:,cgcave if the third-order occurs at an 18.,p,cg.: ics fs3 ,lbbbye1rj;0$^{\circ}\,$ angle for 630-nm light?    $ \times10^{3 }\,lines/cm$

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62#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A grating has $8300\;lines/cm$. How many complete spectral orders can be seen (400 nm to 700 nm) when it is illuminated by white light?   

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63#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The first-order line of 589-nm light falling on a diffraction grating is q,ct,r /wdie- observed aq-, wr,i/ec tdt a 15.5$^{\circ}\,$ angle. How far apart are the slits?    $\mu m$
At what angle will the third order be observed?

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64#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A diffraction grating hxjtftx.5 t ,9tc3ic2 das $ 6.0\times10^{ 5}\;lines/m$. Find the angular spread in the second-order spectrum between red light of wavelength $ 7.0\times10^{-7 }\;m$ and blue light of wavelength $ 4.5\times10^{-7 }\;m$.    $^{\circ}\,$

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65#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light falling normall7 8u7o6auu..nep atsey on a $9700-line/cm$ grating is revealed to contain three lines in the first-order spectrum at angles of 31.2$^{\circ}\,$, 36.4$^{\circ}\,$, and 47.5$^{\circ}\,$. What wavelengths are these?
$\lambda_{31.2}$    nm
$\lambda_{36.4}$    nm
$\lambda_{47.5}$    nm

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66#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the highest spectral order that can be seen if a grating with 6000 line x kldij1(/2tfs per cm is illuminated with 633-nm laser light? Assume noixj(dl2/ k 1ftrmal incidence.   

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67#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two (and only two) full spectral orders can be s1 d-2rdl u+n ojgnyi4grhk0;t.ad f86 een on either side of the central maxinr1f l g.od0h48dygjdt ar ;2n6- iku+mum when white light is sent through a diffraction grating. What is the maximum number of lines per cm for the grating?    $ \times10^{ 3}\;lines/cm$

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68#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  White light containing wavelengths from 410 nm to 750 nm falls on a grating ai5xyfp f64z1bg */bz with y1z6f* zib/4 gapf5xb$8500\;lines/cm$ How wide is the first-order spectrum on a screen 2.30 m away?    m

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69#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A He-Ne gas laser which5 rcxn32f iza:*2lcf0 g q,soz produces monochromatic light of a known wavelength $\lambda\;=\;6.328\times10^{-7 }\;m$ is used to calibrate a reflection grating in a spectroscope. The first-order diffraction line is found at an angle of 21.5$^{\circ}\,$ to the incident beam. How many lines per meter are there on the grating?    $ \times10^{ 5}\;lines/m$

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70#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two first-order spectrum lines are measure)k+ cs6g1uth 1n z1jaad by a $9500-line/cm$ spectroscope at angles, on each side of center, of +26$^{\circ}\,$ 38$^\prime$,+41$^{\circ}\,$ 08$^\prime$ and -26$^{\circ}\,$48$^\prime$,-41$^{\circ}\,$ 19$^\prime$. What are the wavelengths?
$\lambda_{26.72^{\circ}}\;=\;$    nm
$\lambda_{41.23^{\circ}}\;=\;$    nm

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71#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a soap bubble is 120 nm thick, what wavelength is most strdl lg 7eegsm /tjw:f9(pq:+x)ongly reflected at the center of the outer surfedggl (txsj)l: f+ /7 wm9qep:ace when illuminated normally by white light? Assume that $n\;=\;1.34$. $\lambda$ =    nm ,which is an    -  

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72#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far apart are the dark fringes in Exam9mo(-djtyr+ 1kimey 5ple 24–8 if the glass plates are each 26.5 cm long?yei-myr k j(t9do+5 1m    cm

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73#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the smallest thickness of agq b8d 6u a7wxn6(ykc) soap film $(n\;=\;1.42)$ that would appear black if illuminated with 480-nm light? Assume there is air on both sides of the soap film. $t_min$    nm

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74#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A lens appears greenish yellow (tb5o4s mqec db2)d/7ktoe 6b3x5+xgh $\lambda\;=\;570\;mm$ is strongest) when white light reflects from it. What minimum thickness of coating $(n=1.25)$ do you think is used on such a glass $(n=1.52)$ lens, and why? $t_{min}$    nm

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75#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A total of 31 bright and 31 dark Newton’s rings (not counting ppks/ j0o9q6p the dark spot at the center) are observed when 550-nm light falls normally on a planoconvex lens restinj0/pop kpq6 s9g on a flat glass surface (Fig. 24–31). How much thicker is the center than the edges?    $\mu m$


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76#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A fine metal foil separates one end of two pieces of optically flat glas)a9kexc, strz;a e64ss, as in Fig. 24–33. When light of wavelength 670 nm is incident normally, 28 dark lines are obsta 94ars6)e e;,sxckzerved (with one at each end). How thick is the foil?    $\mu m$


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77#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How thick (minimum) should the air layer be between ml0qwv9sez23ct 9dq0 u n20at two flat glass surfaces if the glass is to appear bright when 450-nm light is incident normal3na2tuq9 0mdzs 2te900vq c wlly?    nm
What if the glass is to appear dark?    nm

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78#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  vA piece of material, suspected of being a stolen diamo k xu690jib2+mh mcl(ond $(n=2.42)$ is submerged in oil of refractive index 1.43 and illuminated by unpolarized light. It is found that the reflected light is completely polarized at an angle of 59$^{\circ}\,$. Is it diamond? 

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79#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A thin film of alcohpl uvyr3p0pju*:i5g*( .if p.dbi6vwol $(n=1.36)$ lies on a flat glass plate $(n=1.51)$. When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for $\lambda\;=\;512\;nm$ and a maximum for $\lambda\;=\;640\;nm$ What is the minimum thickness of the film?    nm

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80#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a Newton’s ring apparatus (Fig. 24–31) is immersed in a liquid,u35bzsqeds0dl /8 w(z the diameter of the eighth dark ring decreases from 2.92 cm to 2.48 cm. What is ths0(dl35e dz8z us/qb we refractive index of the liquid?   


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81#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of the light entering an interferometer ib :9hb9 f zsj*rdsb*jpv:s8a;f 644 bright fringes are count9z;bjb:f*:s9v*h 8dpbsa srj ed when the movable mirror moves 0.225 mm?    nm

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82#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A micrometer is connected to the movable mirror of an interferome 8)vgg -tkss*slddtp0 0r6yu 4.k2a ibter. When the micrometer is tightened down on a thin metal .lk 4 ug)6vg8t-dd b0pr0a2si sstky*foil, the net number of bright fringes that move, compared to the empty micrometer, is 272. What is the thickness of the foil? The wavelength of light used is 589 nm.    $\mu m$

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83#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far must the mirrorsha6 (s)mo*;ys ynt c0)2gklp $M_1$ in a Michelson interferometer be moved if 850 fringes of 589-nm light are to pass by a reference line?    mm

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84#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One of the beams of an intert d(lkg8k 9yqyv/j19rferometer (Fig. 24–59) passes through a small glass yy( jr tgkq9kl91dv8/container containing a cavity 1.30 cm deep. When a gas is allowed to slowly fill the container, a total of 236 dark fringes are counted to move past a reference line. The light used has a wavelength of 610 nm. Calculate the index of refraction of the gas, assuming that the interferometer is in vacuum. $n_{gas}$

  


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85#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two polarizers are org,o6 zus- wud2 a*46g)qvqhcoiented at 65$^{\circ}\,$ to one another. Unpolarized light falls on them. What fraction of the light intensity is transmitted?   

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86#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is Brewster’s angle ff(79*0b ly rapotu-wiy 6 fmf5or an air–glass $(n=1.52)$ surface? $\theta_{p}$    $^{\circ}\,$

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87#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is Brewster’s angle for a diamond ix, qz bzz0m v5;o6li)submerged in water if the light is hitting the diamond mzi6v, l0)xoz qb;5 zi$(n=2.42)$ while traveling in the water? $\theta_{p}$    $^{\circ}\,$

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88#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two Polaroids are aligned so t3mrp w+k8i z cyzq2 pqgk0n+j;/2+qcyhat the light passing through them is a maximum. At what angle should one of them be placed so that the intensit p++rkwzkqip;8zqnc32+0 yg/j ycq2my is subsequently reduced by half?    $^{\circ}\,$

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89#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what angle should tf gx x5;iz*.df*s(glohe axes of two Polaroids be placed so as to reduce the intensity ogx5i*o ;(l xf .sg*zfdf the incident unpolarized light to
(a) $\frac{1}{3}$ ,    $^{\circ}\,$
(b) $\frac{1}{10}$ ?    $^{\circ}\,$

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90#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two polarizers are orientedhph+4qa4 n,z j at 40$^{\circ}\,$ to each other and plane-polarized light is incident on them. If only 15% of the light gets through both of them, what was the initial polarization direction of the incident light?    $^{\circ}\,$

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91#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two polarizers are oriented at a7ln*i3j.e+cmqck.y3ml jx .38.0$^{\circ}\,$ to one another. Light polarized at a 19.0$^{\circ}\,$ angle to each polarizer passes through both. What percent reduction in intensity takes place?    %

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92#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What would Brewster’s angle be for reflections off td:7(pcd a:ws* wky9 hrhe surface of water for light coming from beneath the surface? Compare to the angle for total interna9 dwyk:ahp r(7*s :dcwl reflection, and to Brewster’s angle from above the surface.
If the light is coming from water to air, $\theta_{p}$    $^{\circ}\,$For the refraction at the critical angle from water to air $\theta_c$   $^{\circ}$ If the light is coming from air to water $\theta_p'$   $^{\circ}$

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93#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Unpolarized light passes through five s vb7 yn52ptsko-aase0 zo+1 .lf,gn 3huccessive Polaroid sheets, each of whose axis makes an gh7 vfk ot3n a,5sszy0a-epl1+bo.2 45$^{\circ}\,$ angle with the previous one. What is the intensity of the transmitted beam?    $I_0$

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94#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light of wavelength vku5oil;hby4tc fg vq/)+;zgk3w0r ($ 5.0\times10^{7 }\;m$ passes through two parallel slits and falls on a screen 4.0 m away. Adjacent bright bands of the interference pattern are 2.0 cm apart.
(a) Find the distance between the slits.    mm
(b) The same two slits are next illuminated by light of a different wavelength, and the fifth-order minimum for this light occurs at the same point on the screen as the fourth-order minimum for the previous light. What is the wavelength of the second source of light? $\lambda_2$    $ \times10^{-7 }\;m$

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95#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Television and radio waves reflecting)l ;cy vybocbj;275s; bb*wfo from mountains or airplanes can interfere with the direybb7fsv2lb5b ;j * wy;c)o;o cct signal from the station.
(a) What kind of interference will occur when 75-MHz television signals arrive at a receiver directly from a distant station, and are reflected from a nearby airplane 118 m directly above the receiver? Assume $\frac{1}{2}\;\lambda$ change in phase of the signal upon reflection.  
(b) What kind of interference will occur if the plane is 22 m closer to the receiver?  

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96#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Red light from three separate sources pa,/+ 3cw rp(vpu 6etyg(.i ibz6uj .yycsses through a diffraction grating with w jy,3uprz/u gt6b.(6y. i+y iecvcp($ 3.00\times10^{5 }\;lines/m.$ The wavelengths of the three lines are $ 6.56\times10^{-7 }\;m$ (hydrogen), $ 6.50\times10^{ -7}\;m$ (neon), and $6.97 \times10^{ -7}\;m$ (argon). Calculate the angles for the first-order diffraction lines of each of these sources. $\theta_{h}$    $^{\circ}\,$ $\theta_{n}$    $^{\circ}\,$ $\theta_{a}$    $^{\circ}\,$

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97#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light of wavelength 590 nm passes thrjpo w8dczq+0 1ough two narrow slits 0.60 mm apart. The screen is 1.70 m away. A second source of unknown wavelength produ18po wd0+jqz cces its second-order fringe 1.33 mm closer to the central maximum than the 590-nm light. What is the wavelength of the unknown light? $\lambda_2$    nm

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98#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A radio station operating at 102.1 MHz broadcasts from two azv6s+il 4.sxidentical antennae at the same elevation but separated by an 8.0-m horizontal distance d, Fig. 24–60. A maximum signal is found along the midline, perpendicular to d lsv 4.xaz+6is at its midpoint and extending horizontally in both directions. If the midline is taken as 0$^{\circ}\,$, at what other angle(s) $\theta$ is a maximum signal detected? A minimum signal? Assume all measurements are made much farther than 8.0 m from the antenna towers.

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99#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A teacher stands well back from an outside doorway 2 9orjk3tig 8vg zqs/lg(ao570.88 m wide, and blows a whistle of frequency 750 Hz. Ignoring reflectiov/q (ggtg or59i lozak73js28ns, estimate at what angle(s) it is not possible to hear the whistle clearly on the playground outside the doorway.    $^{\circ}\,$ either side of the normal.

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100#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
If parallel light falls on a single slit o/n+ atwe+n cc)f width D at a 30$^{\circ}\,$ angle to the normal, describe the diffraction pattern.
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101#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wings of a certain beetle have a series of parallel lines across them.qh.l7 4yapg q8 When normally incident 460-nm light is reflected from the wing, the wing appears bright when viewed at an anglq7qyap .hg84 le of 51$^{\circ}\,$. How far apart are the lines?    nm

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102#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How many lines per centimeter must a gq8/qo(ukb.il r d1nuf ,2ptl +rating have if there is to be no second-order spectrum for any visible wakq, +. llod28fput( ir/un1b qvelength?   $ lines/cm$

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103#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Show that the second- a wrwag2d+:xfv7q8yq 9 nd third-order spectra of white light produced by a diffraction grating+ wx:29wyr gfq8v 7aqd always overlap. What wavelengths overlap exactly?
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104#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When yellow sodium li8imz.hvh osk qp hi(24ga hz-y+ w)p5:ght, $\lambda\;=\;$ falls on a diffraction grating, its first-order peak on a screen 60.0 cm away falls 3.32 cm from the central peak. Another source produces a line 3.71 cm from the central peak. What is the wavelength of the new source? How many $lines/cm$ are on the grating?
   nm
  $ lines/cm$

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105#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Light is incident on a difj m5n 9*htgb,u+z;yglfraction grating with and the pattern is viewed on a screen 2.5 m from the hyt j+lg, 5mgznb*u 9;grating. The incident light beam consists of two wavelengths, $\lambda_1\;=\; 4.6\times10^{ -7}\;m$ and $\lambda_2\;=\; 6.5\times10^{ -7}\;m$. Calculate the linear distance between the first-order bright fringes of these two wavelengths on the screen.    m

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106#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What is the index of refraction of a clear material if a .z4:v/b8,jaftsb (g :xo hkfvminimum of 150 nm thickness of it, when lavb:ojh/v 8x4t asfb,:.gz f(kid on glass, is needed to reduce reflection to nearly zero when light of 600 nm is incident normally upon it? Do you have a choice for an answer?
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107#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Monochromatic light ofxc3 :kd90vazw 5ilwo r:3dzu+ variable wavelength is incident normally on a thin sheet of plastic film in air. The refl5z ux:rlav c3oddw0:i z3kw9 +ected light is a minimum only for $\lambda\;=\;512nm$ and $\lambda\;=\;640nm$ in the visible spectrum. What is the thickness of the film $(n=1.58)$? [Hint: Assume successive values of m.]    nm

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108#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compare the minimum thickness needed for a. efi b.dic9vp:5tz/y n anti-reflective coating $(n=1.38)$ applied to a glass lens in order to eliminate
(a) blue (450 nm),    nm
(b) red (700 nm) reflections for light at normal incidence.    nm

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109#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the minimum (non-zero) thickness for the air layer between two flat gl q3mi,,a -eq wjt8gdd2s 79trqass surfaces if the glass is to appear dark 9- 8jgtqiq2aqwm73r, ,sdtedwhen 640-nm light is incident normally?    nm
What if the glass is to appear bright?    nm

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110#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose you viewed the light transmitted thrj66/c k q9luppough a thin film layered on a flat piece of glass. Draw a diagram, similar to Fig. 24–30 or 24–36, and describe the conditions required for maxima and minima. Consider all possible values of index of refraction. Discuss the relative size of the minima compared to the maxima and to zeu9c pjpl6 /k6qro.
24-30
24-36
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111#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what angle above the horizon is the Sun when li+7nxrob *r+)eef0d zeght reflecting off a smooth lake is polarized most strongl+0*e7e+ rdx rbfz)noey?    $^{\circ}\,$

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112#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what angle should th3n6f+r 2 da gandd13fse axes of two Polaroids be placed so as to reduce the intensity of the incident ua6 23adg3+nd1 rfnfsdnpolarized light by an additional factor (after the first Polaroid cuts it in half) of
(a) 4,    $^{\circ}\,$
(b) 10,    $^{\circ}\,$
(c) 100?    $^{\circ}\,$

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113#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Unpolarized light falls on two poet .3xput6c t,larizer sheets whose transmission axes are at right angles. A third polarizer is placed between the first two so that its axis makes , epc63ttu.xta 62$^{\circ}\,$ angle with the axis of the first polarizer.
(a) What fraction of the incident light intensity is transmitted?    $I_0$
(b) What if the third polarizer is in front of the other two?

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114#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Four polarizers are placed in succession with their axes verza9 fhb3fl-ovi:z vkq07r - -ktical, at 30$^{\circ}\,$ to the vertical, at 60$^{\circ}\,$ to the vertical, and at 90° to the vertical.
(a) Calculate what fraction of the incident unpolarized light is transmitted by the four polarizers.
(b) Can the transmitted light be decreased by removing one of the polarizers? If so, which one?
(c) Can the transmitted light intensity be extinguished by removing polarizers? If so, which one(s)?
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115#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A laser beam passes through a slit of width 1.0 cm and is pointe0shnpp) .c jlq7.*qn3( gqk8b yk2qsfd at the Moon, which is approximately 380,000 km from the Earth. Assume the laser emits waves of wavelength 630 nm (the red light of a He-Ne laser). Estimate the width of the beam when it reaches the Moon.g(kn7.c hsqqp 8sbq.qfkj 0)n* yp3l2    km

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116#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series of polarizers are each placed at a v9*c2qrh7 k9tvp pxx;-t- xnp10$^{\circ}\,$ interval from the previous polarizer. Unpolarized light is incident on this series of polarizers. How many polarizers does the light have to go through before it is $\frac{1}{4}$ of its original intensity?   

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117#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A thin film of soap xgrw teidb74oph a 8 jcm3ve,g0(u:.7$(n=1.34)$ coats a piece of flat glass $(n=1.52)$ .How thick is the film if it reflects 643-nm red light most strongly when illuminated normally by white light?    nm

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118#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider two antennas radiating 6.0-MHz rasncxm,r8v4(a 2k d7lodio waves in phase with each other. They are loc,(8xmlvs4 2 ro n7dckaated at points $S_1$ and $S_2$, separated by a distance $d\;=\;175m$, Fig. 24–61. What are the first three points on the y axis where there will be destructive interference? (Destructive interference in this case means that a radio receiver placed at that point would pick up no signal).    m    m    m


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119#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel beam of light containing two wrt- kyiu,+ g2,hcetx w62ojo 6avelengths, 420 nm and 650 nm, enters a silicate flint glass equilateral prism (Fig. 24–58). x 2ieg, tjy 2o+h6 cu-ro,kw6t
(a) What is the angle between the two beams leaving the prism?    $^{\circ}\,$
(b) Repeat part (a) for a diffraction grating with    $^{\circ}\,$



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120#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A Lucite planoconvex lens has one flat surf(zf7(ibugm p08d +wpd ace and one with $R\;=\;18.4\,cm$ It is used to view an object, located 66.0 cm away from the lens, which is a mixture of red and yellow. The index of refraction of the Lucite is 1.5106 for red light and 1.5226 for yellow light. What are the locations of the red and yellow images formed by the lens? [Hint: See Section 23–10.]
$d_{i-red}$    cm
$d_{i-yellow}$    cm

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