11.24: Two wave pulses travel to the rp/dxnmj0,( n wj5(jltight toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Whim,jxw(0/lt 5j( pjndn ch 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 passes through the air a 0zdz8jylprvu3-( +s,f mx s/dnd strikes the surface of a plastic block. Which pair of statements corrs f+ z0- dzjv,px sr/3luydm8(ectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point l x(0bu1/ul6sg*pewm 8*j aqr labeled B in the diagram shown. The ray reaches u/ 6 s me*prqll0(g*wb1a8ujxa 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 is +olj)q :(umzaincident on

  05.18: A student hold a hand mirror to observe the1 ds8dj e9c-,q8ko fpg back 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 mir qdpejsg c ,f1k889o-dror 1 ft behind 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 changesy stvy 4d2un7.q4mb5 h direction when it enters a new mat by dt.7hm4n5u4 2sqyverial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air .+;n8f as78(g h yvwsf0)si+kfp wktqhas wavelength 400 nm in a transparent material. What f ha+yw v88. g)s(;ss+kkp7fn0i wqftis the index of refraction of the material?

  98.04: As sound travels from steel into ai)zkr0iww. siq 6d8r yb1 pcu)*r, both its speed and its:

  00.01: As a wave moves from one medium to a second mediuz a4su-q n/se3wz,.g fm with a different index of refraction which of the 3uawzg-qs ,es n.f /4zfollowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning for(bsz :z.eam2 ak of single frequency travels from air (with speed of sound 340 m/s) into rock zm a.(za bse:2(with speed of sound 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 swimmin2 )kw1org(wv2n6 a xl )7gskadg pool emits a sound wave that travels toward the surface of the 1nkws ga)dvrk (wl7x6 ao)2 2gwater. 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 quehrzzy 94l 8xca 7;;block with an angle of inci yulz4az98e;qcx hr7;dence 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 sqo6 h+m83 n*mzho2jxp tc,)gon a boundary as shown to the right. Which segment best represents the refractz6,hs23mm )jq+o8o*gn h ptxc ed ray?

  98.17: Which diagram best representvtz h3k y(c:p6s what happens to a ray of light entering air from water? Air is at the top in allp hk(c3 v:6tyz diagrams.

  94.11: The critical angle of a mate:b .f ehau.s blh)+dk(rial is the angle of incidence for which the auld ehh ). sb+a:kb(f.ngle of refraction is:

  95.12: The principle underlying fiber optica 5vs-:znih z1/;xyt sdcvob z)am-5*s is:

  98.36: The critical sck5 +0ct o4p 4b3enmrangle in a transparent 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 materialu(s o 4u ys4oooxewc)9c0k/v* X with an index of refraction of n = 1.5 to material 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 ma0c(vox49swkouoscu * o4)e/ yterial X?

  03.15: A jeweler can distinguish 2oex nhkj d67oae7oi:m:gz0 p4:2mc jbetween 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 has a critical anglz4kmcmnx0:o7ogp7: :26e i2 jahed joe 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 f5 adqnnf*s4rmr- p dg(u29b :orom air into a clear material. When the light makes an angle of incidence : 9f (ng5r*d4omap2ubnq-dsrequal 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 index of refractim89m;m p wm(phujxh/j y*wv92on n. The laser beam emerges from the material and hits a target. See the accompanying figure fo jw2(y9; wum/mhm pmv 8hxp*j9r 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 2p ,e5 tbp2pq mzpwa621 to medium 3 as shown in the accompanying figure. What ism62zp ,eq51tb2 wppa p true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light pass dat+6iw,2l wb0qs9o zes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, nqiw6+a2z,o w9d ltbs02 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes p.2nl6cj:(0jjlq za0wy ,x egwassing through three transparent materials. The inznq0e(x j:cy2.w60 wj aglj,l dices 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 path taken by ar kuz n,;;ma4r monochromatic light ray traveling tku ;rm;,4 raznhrough 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 , n9sft8h;p v jkdt6-w n9-tvntraveling in glass ($n_g$=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 recta*cq,opai(hd *zk kz.a*qlpt:j,j i+4 ngular block of glass at an angle.,pz4ot* ljza (kpqai :*kcd*iqhj,+ 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 wavelen:v, 6j z)xxhi8wd-fifgth 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best in ifzj:h d),86x-ixfwvdicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular gla3vlei*wy /kv (iz. f7dss as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of thefvziwli7 y* k.d/(3ve lettered rays shows the path of the light after it exits the glass?