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习题练习:gc textbook chapter 24 Wave Nature of Light



 作者: admin   总分: 120分  得分: _____________

答题人: 匿名未登录  开始时间: 25年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’ principle apply t zyhmdy wim2a)/25o. i 2ptou2o 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 that light is ene ct(wbj:8xief+l gs9t9 8 it.zrgy?
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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 de qa;h tksm3t7t) nm1*s0jh; 0peruxm,cw (9swscribed as rays and sometimes as waves?
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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 cornera.ue3pf/ rn - 0savbx4s; yet both sound and light are waves. Explain the diff-4 as f3rep.a/v nubx0erence.
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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 experiment we :v-vo /vo- zeyy02-jxlq xc*ji q9o3sre submerged in water, how would the fringe qie2*l x-xqc- 9zjo :ov3vy j s0-y/vopattern be changed?
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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 incid dh0kqsrz4s6 iti1)*went on a double slit, and the interference pattern is viewed on a screen some distance away. Explain how the fringe pattern would change if the red light source sq6t zdw*k1h)4 rs0 iiis 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 intj95 omq6wg;pv7 7zzgterfere if their path lengths differ by how muc9g; z mqwvz7g oj65pt7h?
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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 )vuz,i;fx.f oincing evidence for the wave theory of light than the observation of diff f.vox fz,;iu)raction?
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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 wavejxx7+y fb/b9pd-7ig qs to that for light waves. Discuss the similarities and diffeqj+fibyd7g-x /7pxb 9 rences.
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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 headlights of a distant car produce annpmq +d8ysbsu3vl 2z.*-qpto( o3fx, interfere,qdz 3yft3sp *2.-o xnqubpl s8m(+ovnce pattern?
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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. 2w:h/nq 2p-ax- bswi8z4–7, but one slit is covered by a red filter (700 nm) and the other by a blue filter (450 nm). Describe the pattern on -a /nsxwwq-28b :ph izthe 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 brok)knw8, 2sm6hkhy o1z9 jb wiz1en down into colors as it is by a prism. Explji9m h o kz6z)12k,nw1ywsb8hain.
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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, discuss6kizz el 4voa1pfc )7hwxumx .--2xb; how the focal length for red light diffe)x 6m. -lp;u- ze17zxh woibk4c fxv2ars from that for violet 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 refracted through thre (hgpyg3 /z.1zyfyov1nn8aq(e different materials (Fig. 24–55). Rank the materials according to their index oyp(z. a1 yy z( 8ghqfno3ng/v1f 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 distant light s+,v)d,t s gwm*x he(lce ta7.iource through a narrow slit between two fingers. (Adjust your fingers to obtain the best pattern.) Describe the pattern that (a t*e)h+w,v7 .glsei m,xtcd you 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 ckz5fx- s-lq7pdr4 x1pattern of a single slit if the whole apparatus is immersed in (a) water, (b) a vacuum, instead of 5qc-s7lxx- 1 r4zfpdkin 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 increasing (a) the nxb8qz 5x -sm(slit width, and (b) the wavelengx(zq 5mxn8bs -th?
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18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What is the difference in t .-+m,welw y-9ogrdro he 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, what is the advantage of (a) many slits, ( itace 0fl);b0b) closely spaced sli; etbl0cfi 0)ats?
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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, and (b) a prism/wt+, j88pqg4yuj j fy. A rainbow appears on a wall j4jj fjy8p+qyg/ ,8 twuust 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 an14i bh.q hpe)yl( ey.tkerxnwf, 6/0od 700 nm, incident normally on a diffraction grating, for what orders (if any) would there b,hr.o0lwye/eftb. e (1 6 p4yqh nkxi)e 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 interferencehuqwvx;:3j 3sa+ux3 v fringes noticeable only for a thin film like a soap bubble and not for a thick piece o x+j:a v ush;3qw3x3vuf 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 held at an angle in white light, the za f:w kk8z7+zyy ,b3wreflected light is a full spectrum (Fig. 24–56). Explain. What would you expect to, fyw3wb zkkz:a +87zy see 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. 24dl t0( usl1tt,.no ske;9qwt;–31) closer together farther from 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 appo(r 6d+xu)qy+k bjfhp1 ud b7s(s8ey. ear greenish yellow when seen by reflected light. What wavelengths do you su+ sy(dfkbb .xop 861sq7ru+d)(yhu jeppose the coating is designed to transmit 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 7mfn9z6x0y/q uo xb9o, where its thickness is much less than the wavelengths of visible light. What can you say about the in09x/xz6oq7noby m f9u dex 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 nab 8,dzqoy df01ture 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 m 4 mi(73msz :jqs6n4rgcegh, sunglasses over normal tinted sunglasses.
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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 sunglasses is pp7:e p5ud t 5dumkv) xdzqksq7(2r.h4olarizing 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 at an angle of 9pa nyt )iw7;a00$^{\circ}\,$ 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 colorer6 6ma0tv.jb 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 denser than it is, would sunli( h8tze s2c8gight still be white, or would it be some othe2t zsgi8 (e8chr 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 tk2os)w ,d/qi cwo slits 0.016 mm apart produces the fifth-order fringe at an 8,2oqc) sk/wid .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 v(o m7 6iwggrv7(hlb3610 nm light is observed 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 fallwwa 9/fr(tcmuq:+f 3sw o2ul3s on two very narrow slits 0.048 mm apart. Successive fringes on a screen 5.00 m away are 6.5 cm apart sml2r u9+ffau (3qtw w3:ocw/ 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 i nt3 vrf4,6ch,j+:v sgm+qey a He-Ne laser, with a wavelength 656 nm, falls on two very narrow slits 0.060 mm apart. How far apart are the yf:sjrt,3 6 hvmi +c4,vg n+eqfringes 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 produces an interfp6op+ gw)ovr0 erence pattern in gp+6p)vo0 worwhich the 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 twokgg s36ghz-r1 slits 0.58 mm apart, how far apart are the second-orrggh k gz3s-16der fringes for these two wavelengths on a 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 experiment, it is found that blue light of wavelength 460 nm gdp7 c8: t+s u2etqij9wives a second-order maximum at a certain location on the screen. What wavelength of visible light would have a minimum at the same l: i8tjepw2cs7 tqu9+docation?    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 p-4 (hkzpzp;c4ei0 ibwarallel crests 2.5 cm apart pass through two openings 5.0 cm apart iz 4bz; p( i4kh0wic-epn a board. At a point 2.0 m beyond the board, at 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 pl*n/ 4 nhzlm y.m:i;nqflymv;psxo2 0- aced in front of the lower slit in Fig. 24–7 so that the two waves 0p*xo .f/nl;zm my4h msnyli:q2n;- v enter 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 experiment, the third-order maximum ;r8slt(dkcgivm mz yc;: g) 23zn )e2kfor light of wavelength 500 nm is located 12 mm from the central bright spot on a screen 1.6 m from the slits. Light of wavelength 650 nm is then projected through thcm) 2; ksdvri;nzcg tegm38 yl 2)z(:ke 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 illumin /3iaba x*l mrb;n9)kiated by 544 nm light. Find the distance ki9 *3 / anmr)xb;iablbetween adjacent 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 on two ):xx8omjdd4 +o z(palslits $6.00 \times10^{-2 }\;mm$ 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 of a 7z glh*k0oj1gdouble-slit apparatus illuminated by 640-nm light. The center point on the screen, instead of being a maximum, is dark. What is the (minimum) thicknessz *0j1o 7kglgh 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, appcm7ujy:q 0/t yroximately, does the speed of red light (700 nm) exceed that of violet light (400 nm) in sil yy :7c0um/tjqicate flint glass? (See Fig. 24–14.)    %


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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 a piece of glass at a 60.x;n6zwxf-n:e 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 containi1 zsn omss)gw+8j6q.eng 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 on a slit 0.0440 mm wide, what is the full angular lu8dr p9.8nw zwidth of the central z d8uprwn l98.diffraction 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 on a slit exv9h3jm-m+ 4rg 4rb mthat 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 5206v-8(w2aynl7a ih jj x nm falls on a slit that 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-+ / *ymykwpdeoezjmwj/r6 0i ca0 *8i3af .c9onm light. What is the width of the central maximum (in cm) in the diffr0fa+k z.my0wi /c6joe9e**d3ip c8 / my jworaaction pattern on a screen 5.0 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 slit. If the angle y 5b)tmm+syltqv5p*05 dryh9 between the first brigq )p msvdyyt+mh*b5 55ry09ltht fringes on either side of the 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 2.30 md63+ueh* nyu s behind a 0.0348-mm-wide slit illuminated by 589-*yu en+s63hdu 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 first,kv2i4g b kz8o dark bands on either side of center obvk,g 4kzi2 8are 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 415i m gu75upiprj3i grl;s-q -/t.8;joi nm falls on a single slit, it creates a central diffraction peak that is 9.20 cm wide on a screen that is 2.55 m aw/ i;rosu m3gq87; -j5i uiprgp-j. litay. How wide is 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 liof81 1(cepj pvght so that the diffraction maximum is 4.0 cm wide on a screen 1.50 m away, what will be the width of the diffract 8p1cjve(of 1pion 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 waveleng2q+a wagu8hh )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-order maximum rv8l 62wl blw7s:r5rss-gqs+j j 76vswhen falling on a grating whose slirs6v 7svwq ljj7gr-+s s6: rsw5 lbl82ts 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 have iekm. s7;rv, dxf the third-order occurs at an 18.xe .;kmd,7vrs 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 falpz +l4sywc /;2b5tsqta pxy 0,ling on a diffraction grating is observed s4 y2;qa,z5psywt+pl0xb tc/ at 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 gratinw+x- ;d)nd)l 8 wnwnmxg has $ 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 normally 8s3nal7em +9fzdg)f+f bcmaz jn(1 f 6on 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 6 i d:b,ua9xa2/d e) f*wevp9xc000 lines per cm is illuminated with 633-nm lasecv eui*xex a9w:ap),/2d9 dfbr light? Assume normal 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 seen on-s6 9g3huuy wckw5o 9u either side of the central maximum when white light is sent through a diffraction grating. What is the maximum n6h5owc 9-s9uuku 3ygw umber 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 /w oor,uz.e5iheb/u5 with hw o/ /iru5.5, eeuboz$8500\;lines/cm$ 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 which produces monochromatic light of a kno,dur0qxr 98n) lmof4x08njhbwn 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 meas+e( vc95qrwk9 o6tregured 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 strongm4e4 i:+ xwad 5o lppj)krq6f6,)tqeily reflected at the center of the outer surface when illuminated normally by white light? Assume that q4ptje 5)+6)q6 rpomadiw el kxi4f, :$n\;=\;1.34$. $\lambda$ =    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 Example 24–8 if c h0zh5egtn,0bcax he+b i)tqd9 z(,1 the glass plates are each 26.5 + c, 0bz1h9bhdt0cx 5ihae ,)qen ztg(cm long?    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 smallestk 02dp 8i n+wtmj*db/g thickness of a 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 yello6ickcc;0o x/p w ($\lambda\;=\;570\;mm$ 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 Njhdd0 f ocl7 .v/87cs/rt )thuewton’s rings (not counting the dark spot at the center) are observed when 550-nm light falls normally on a planoconvex lens resting on a fld rh8j0 .fl7o/)tcsvht/c d7uat 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 endp6i1iaz7(pmqca7g e4 of two pieces of optically flat glass, as in Fig. 24–33. When pip7z7e ag( 46m1qcialight of wavelength 670 nm is incident normally, 28 dark lines are observed (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 aq .a-* 4wzwiaq23vkmg jz ,k+eir layer be between two flat glass surfaces if the glass is to appear brig aka3zewkwi +-gjmz4v *.q,q2ht when 450-nm light is incident normally?    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, suspecte8; :4t4upzy8w o:ox6 aenf 4arbycp* gd of being a stolen diamond $(n=2.42)$ 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 alcoho7i ymawvh 797tl $(n=1.36)$ 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, the d v;*32ljv d)+ klfwmobm .cis6iameter of the eighth darklim f kj.bv*d+;6w32c mvosl) ring decreases from 2.92 cm to 2.48 cm. What is the 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 if 644 bright 5zl cploax8p7 j+sfuh0 h/h:/ fringes are counted uchp:+l xs p/ojh laf7 /85hz0when 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 interferometevho6 -hajm-v1r. When the micrometer is tigvv-oj-a6 h mh1htened down on a thin metal 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 mirror r/aomokv /,;z*x bl f4$M_1$ 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 interferometer (Fig. 24–59) passz/y 1dvuis19xes through a small glass 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 hzxv1 s1y9u/d ias 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 orien9 io2)ldb3i/u,gc2g 2tdue dated 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 f.v xqzpnmvpo(6ow:l : g 6tiq.)u(is5or 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 submerged in water if the light is hittinglcz12oce0f -g cgl2-fe01ozc the diamond $(n=2.42)$ 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 that the light passing through them i mgequ8iz6xj 0r(g/bzqad d5 x(6( yt9s a maximum. At what angle should one of them be placed so that the intensity is subsequently reduced by hardm(gxzyzeqj (qu66d8 x/tb i5(a 9g0lf?    $^{\circ}\,$

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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 the axe( u/*e:wvx;m ki;p zygv2x1 eus of two Polaroids be placed so as to reduce the intensity of the incident unp;exvz:(u ;xu w kp*yi2gv/e1molarized 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 oriented0 st1f u/r+i u6k+zp nlaqn79t 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 or c6q 6 --)zajzvj1s5q3rzcczy8 hgxw(iented at 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 the surface of wate.;vr4d i15x:jmxpfubd (nb8itu f, n-r for light coming from beneath the surface? Compare to the angle for total internal reflection, and to Brews.dxumju(fvb5ndf-i ;pin41 ,x : 8tbr ter’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 successive Polaroid sheets, each of whosb e/mg: lo0gp4e axis makes a 45p 0bg g/4lo:me$^{\circ}\,$ 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 ce5a dvdgr ++/$ 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 from mountaix:lbh n 7z6ms).w-*vro u-0g,ixl n+e(fawqm ns or airplanes can interfere with the direct sig*0o6 ,r+ -z(uhx ilnxwbe7vwm -s ngafl:.mq) nal 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 pass5ixjf4 djz/qvx 081jwes through a diffraction grating with /jxq1 ix0jf58wvjd4z $ 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 through two narrow sliqg:l h v4fo8f(h+hw(t ts 0.60 mm apart. The screen8wlqohf4t( h h+(v gf: is 1.70 m away. A second source of unknown wavelength produces 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 g7 7knj-pr bv5broadcasts from two identical 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 at g 7nb7r5v-jk pits 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 0.88 m wide, and blows a ) -b 3yx mysaxeigj.,:whistle of frequency 750 Hz. Ignoring reflections, estimate at what angle(s) it is not possible to hear the whistle clearly o m:,y e-xxaygb3 )js.in 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 qgc2wocy6s;/bs q*.j j0gt9e of 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 buln5 4qent3)n eetle have a series of parallel lines across them. When normally )5ne un3qt 4nlincident 460-nm light is reflected from the wing, the wing appears bright when viewed at an angle 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 centimeql1o wl ;mmv.g1 e/ 4t1r6vnoater must a grating have if there is to be no second-order spectrum for any visible wavev/tmll .nagmq 1 w v;r14e16oolength?   $ 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- and thir89rh.k xetpb: 23lmyxpfo-r2 d-order spectra of white light produced by a diffraction grating always ovyom8e9 p3t2xh -f:bxr.l2pr k erlap. 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 ligqn/ 6z- pcdz3b, lf09fx8st vsht, $\lambda\;=\;$ 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 diffraction grating with andwfk5f i+3z+ .brr7prw the pattern is viewed on a screen 2.5 m from the grating. The incident lighrwzk3+. fi7 w5+fbrp rt 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 ma kgnebkx2 x39fk- 3:2efqgkp: terial if a minimum of 150 nm thickness of it, when laid on glass, is needed to reduce reflection to nearly zero when light of 600 nm is incident norfbg- x ef 292p:q k3kx3kgnek:mally 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 of variable wavelength is incident nor5log7g miz-) vmally on a thin sheet of pla5)gm z l7ogiv-stic film in air. The reflected 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 an anti-reflective jtgxeh6fyb(hm; 9i0j. xf 7;icoating $(n=1.38)$ 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 wh)x6cl owioj)ux6: 4(non-zero) thickness for the air layer between two flat glass su6wooj) h x4xl:cw)u 6irfaces if the glass is to appear dark when 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 tran0vkga s,v r/6ssmitted through a thin film layered on a flat piece of glass. Draw a diagram, similar to Fig. 24a, 0svvg/sk r6–30 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 zero.
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 horiz, rgj0s8lg h1q45wo thsok. *ton is the Sun when light reflecting off a smooth lake is polarized most sl8rghohj t1t,.0*w4ossqkg5 trongly?    $^{\circ}\,$

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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 the axes of two Polaroidsnzh204cc0 mj3h ca(ab.iwrxwnst1 w/,fd )c9 be placed so as to reduce the intensity of the incident unpolarizzcm 1j/0ca x,r4n)h i2d sh.(9twc0fnwac w3b ed 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 o 1zft)v.t ia:cn two polarizer sheets whose transmission axes are at right angles. A third polarizer is placed between the first two so that its axis makf :1)tizva. ctes a 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 suc u;iqnt+9f/u ,oq 9ktzcession with their axes vertical, 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 pointed at the Moon, o/fu(.iob8z2 xqjq o2which is approximately 380,000 km from the Earth. Assume the laser emits waves of /(zoj2b2 xof8 ui. qoqwavelength 630 nm (the red light of a He-Ne laser). Estimate the width of the beam when it reaches the Moon.    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 atrt 9 m*63eais/pgn4w ip5ym3a a 10$^{\circ}\,$ 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 gxrd +ji7rrh 67y9ki*$(n=1.34)$ 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-MHjkgzke* n 0*r.z radio waves in phase with each other. They are located at points ej**rz0kg.nk $S_1$ 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 e31kzcxau o:1wavelengths, 420 nm and 650 nm, enters a silicate flint glass equi1u3e:cxao1k z lateral prism (Fig. 24–58).
(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 s/ghg(02zl ctz urface 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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