11.24: Two wave pulses travel tov1b1aj jx -v8g the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the -1j a8g vjb1vxpulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface co9rs t/2hsh l4hqv5( of a plastic block. W2hh 5s9o4hs/tl v(rq chich pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward t 5xv ,zrszwa2hp-t4 (w0* cqd8s4laorhrough the point labeled B in the diagram shown. The ray reaches a flx2a zqcrlvw (8zp sswt*4dh r5 -,40aoat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever o1 yf5/:vi0 qnc oelj8light is incident on

  05.18: A student hold a hand mirror to observe the back of he(qooq)2eb lg17 oaj)m r head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she wio)jqlbo(1 7g)2qe omall see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes directm0k ojl5p/yc- ion when it enters a new material. Which oneyopjmc0/kl 5- of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 5fv ah8g(p,y5zv *.8u,iouqn d 00 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the mater.gp a(f,qv*udoh5ny i8zv8 , uial?

  98.04: As sound travetw,f,7z jpig(*qas prx) c own/6u:/ mls from steel into air, both its speed and its:

  00.01: As a wave moves from one medium tomc g2*c:af 6vm a second medium with a different index of refraction which of the following wave properties v2:camcf 6m*gwould NEVER change?

  05.47: A sound wave udimn r):3vgrl *f .mn/br6r7 generated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sounr*.r l:id7r6 m/) fu3vbmng rnd 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poo,nhmx* is pb8 8f6ng2bl emits a sound wave that tran6fs*bbgim p ,82xhn8vels toward the surface of the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strike15g ow9lr j5w,xcjd a7s a rectangular glass block with an angle of inci cwxd 71r5laj 95wgj,odence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed towam/cw9.z98*r,clpqkk cxm9p lzgl q 5/rd a point P on a boundary as shown to the right. Which sep/wc5m,l9pz.9qcz8 l 9 / crqkxmgk* lgment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of l +n( r1l g3jehy/ndei;ight entering air from water? Air is a n+jen/3lgyredh(1;i t the top in all diagrams.

  94.11: The critical angle of a mathvm 0:aj(rs 3vp fu6ef6x0b 4terial is the angle of incidence for which the anr:fs6h vf 30atu pej04m 6vx(bgle of refraction is:

  95.12: The principle underlying fiber optd3 c6pe8l a8i+clhk3js b9(qtics is:

  98.36: The critical angle in a tx og(*4 tpztc+ransparent substance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an indenyuze4 ddgc7b3nayk, h*; ; a2x of refraction of n = 1.5 to material Y with an index of ref7ge3kz *yn2udhca ; d; 4n,ybaraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distqu +g9,dell z:inguish between a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an iu, gd:lq lez+9ndex of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. When the light makes udq.zty91r b,an angle of incidence ,b t .1u9zdyrqequal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a material of inddek fj yv 6ub6 ;k*36jmtvnw82ex of refraction n. The laser b6vt v26*;fwem6jydun j3 bk 8keam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medi 8 g 5urbwg(4og9efd7qum 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)? 4wg8bg5eq gr( 7u9fdo

  00.14: A beam of lige ::4s*gjz):gkhlnz iv;h 8emht passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about thegmh*gse4n i)zlhz: je:vk; 8: three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path tow0cq0f nq9 2,su0v 5m retkq5hat a light ray takes passing through three transparent materiaumfn0 0o2ec vs 9 qq5rw0ktq,5ls. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the pas fl7 2a99psvgnr/whx 8xd8 7dth taken by a monochromatic light ray traveling through three media.The symbowsx7dvgrsd 8 8xh/9naf7l 9p2ls $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling in gz ex(3lkuh:(u lass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface of aut )osfui8qbel9x ,p ym n1)+8 rectangular block of glass at9+ x)mi ft) 8,8uubelp nqyso1 an angle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted from air j:8nma, gb/e):fl 5tqgi zqm20e- t ofinto a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it5e2eigzgl t:b, tf0 j )/qofm:8-amq n enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown. 3s/efy/js s+4zphi :lThe glass has an index of refraction of 2.00 and it is surrounded by air. Whp s: i3eh4/ +flszy/jsich one of the lettered rays shows the path of the light after it exits the glass?