11.24: Two wave pulses travel to the right toward a rigid boundary as shown. Afy rpqml 9ty)5h cc rzk xfk:2:*98u:cvter reflection of the triangular h:q ) ykr:c:tyr*kcv5ul9pmz c 2 9fx8pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam pa 8 p:ma s)f n5fm b-ybmd8i6f )l61upv:hkck:nsses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflm:6unf::hkvsnfd 8 )yml8bkim 5 16ppacb) f-ected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B p)ra+-mqm :8h fb:agqz: w/efin the d:-fq+req8abawg fm/:h m)zp :iagram shown. The ray reaches a flat 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 light. ksawx;d6aq 9 is incident on

  05.18: A student hold a hand mirror to observe the bac0j sc;/ cxypi;z2xq/ck of her 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 behs;ypz 0 / qxcc;ijx2c/ind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a new m *xs4rs m0nmy5aterial. Which one of the follx 4nms50ryms* owing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength os;*qqw bd0ag 7f 500 nm in air has wavelength 400 nm in a transparent material. Ws;*70baq w gqdhat is the index of refraction of the material?

  98.04: As sound travels from steel into air, bouagu u ,o3b5g3th its speed and its:

  00.01: As a wave moves from one medium9tm(i t nj1zy; to a second medium with a different index of refraction which of the following wave properties would NEVER t(m;9ni jy 1ztchange?

  05.47: A sound wave generated from a tuning fork of single frequ21vlb ac8 7hetency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of thealcet2 71hbv 8 sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom ofigq. ..3ikhi s;f,tt nm2t i6f a swimming pool emits a sound wave that travels toward the surface of the water.tiii,i...;sfgk 6mt2 t nhqf3 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 strikes a rectangular glass block with an ahy7,xj ik 1u+b8( yt*hgpe qw0ngle of incidew+ y,h g xhe*(bikq 0j18typ7unce 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 toward a point P on a boundary as shown to tw r:5lol qfswqtj)b1*t03f, mi ;nq m:he right. Whinql0frsio,tmjf ;3 t5b w :*w ):q1qlmch segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a r0tv 5qr* 2*j yqpkk(:dyyw+tmay of light entering air from water? Air is at the top in(kj 5yk0qyw+*q:yd2mtp*tr v all diagrams.

  94.11: The critical angle of a material isi,yvbu ; ht ;r:p/q8nl the angle of incidence for which the angle oyuphql:, v ;8r b;nti/f refraction is:

  95.12: The principle underlying fiber optiz*i*2dk; f2ze6 tdtsj cs is:

  98.36: The critical angle in a transparent substance surrounded.ksk-wfj0 c f0 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 mate21s fjd; ir3l,g hxi(k b-0br-gw( ddxrial X with an index of refraction of n = 1.5 to mahx - kld01b,2i(i drfj;wdgbr3(- sxg terial Y with an index of refraction 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 distinguish between:) fv35zo 0nypzt,ehm a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 )p5nmvthz3fo:,e y0z 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 a2qq;djdi9 6i c clear material. When the light makes an angle o; did69cq2qj if incidence equal 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 materia/;hy7r1o- sswbm;y lwz w -)qgl of index of refraction n. Th)l/bo wy w-hygm;; 1 z-swqrs7e laser beam 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 medium 1 to medium 23*37hlghy ) yp6vnpft to medium 3 as shown in the accompany) 7tlfy h36gpyvh*n3p ing figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 toy,t./dv m qk: ss zyppste;0. vxsb6+) medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refract, ks:p.t;0. +vy/yv)bxqm6d ssp ez stion, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray take,q-qw 4z .ovstm ;:cqfs passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, res mvq4,z:o-s t;w cq.qfpectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows thb e)w 1q9,iqcbx. zzx.e path taken by a monochromatic light ray traveling throu bz xew).xib9zc,.1qq gh three media.The symbols $v_1$,$\lambda_1$ , 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 glassn)cg*8l itoc 8 ($n_g$=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 a rectangular blockjb:yafdn df,xb 7, n59k8 hf3nmu 1u,y of glass at anffbmy dhjx k3b ,8,nu u1y9,7df: nn5a 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 i,2vbfh ud m 7k,jp76ljs transmitted from air into a piece of glass. Which one of the labeled arrows best j76 pubfkm dl,h7j ,v2indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the rig x/3qtgbwlln., r3z8lcv 6f q*ht-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which zrwv lqlqt6/fg.x*b33,8cnlone of the lettered rays shows the path of the light after it exits the glass?