11.24: Two wave pulses travel to the right toward a rigid boundary asw4 jjk-o z*ena rja-:5 shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best:- j*kne-4ao zaj jwr5 represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the scskf6zm9 uf u; yuyh0-)/m3hs urface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted w9hy6s;-yzf 0su3kmm)u huf c/ave?

  12.02: A ray of light passes straight downwj(llu gd7nn)cmlu (9; ard through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an (d ;9)unl7u gmjnl l(cangle $\Theta$ 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 refl +jg menu*db2h1 xj,59h8lxwuection occurs whenever light is incident on

  05.18: A student hold a hand mirlts8c )(cais ..1p ogmror to observe the 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 mirror 1cg o)..samp8l1 i c(st 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 changes direction whb 146om7gi ls6x huid.3 8vxinen it enters a new material. Which one of the following choices is the term bus7i1 .86ixbxn46o3i d lhmgv est associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wav bt nd7by7z:jrpi) 6.celength 400 nm in a transparent mate7z b ri:d 6tc7jp)ny.brial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speenyy6 6tdey )qb wv2z)7d and its:

  00.01: As a wave moves from one medium t0+2h-ss z/+2 ij5csw xjozbtlo a second medium with a different index of refractioctw 5s+jz 02-/izl sbo+2jsxhn which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fro28;vfg-+.x7(ns pk frdajwxzm 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 freqzwsx-p. 7drafv28 xgf+; j(knuency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at th8 -vos29zz 9218xkeutevlnd ye bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wav1dvevz889xou ke zts 29-ln2ye 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 pdymlyi ) :: o8oe+-d+wvzul2strikes a rectangular glass block with an angle of incidence o 2d- )illy8dy+ ovw+ pmuze:o:f $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is )qu5xnsbax*5srcu8 ; directed toward a point P on a boundary as shown to the right. Which segment best represents the reun b) 58xqcsxua; s*r5fracted ray?

  98.17: Which diagram best represents what wzp,k -y16qswn mj wn9dca33sr*z(2nhappens to a ray of light entering air from water? Air is at the top in all n9d,k6z*w3ymqa nwc j s(w3s- zp2r1ndiagrams.

  94.11: The critical angle of a material is the angle of incidence forf* xwb+0ni5m0s nxhi9 which the angle of rm5x9bs 0h0ifnn*+i xwefraction is:

  95.12: The principle nutxldqz/kz+ 4q2 dq)z 5g(+,iueux*underlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by ag phrh 6u (e63-qdq7miir is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels frydsy4e: x4 (cyom material X with an index of refraction of n = 1.5 to material Y with an index of refrac4ydseyx4:y c( tion 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 be0e4etf t kof:3tween 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 cre3 tko0fe 4:tfitical 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 frod 1/ s8wft9 jls5bzmrnfm am8:(v7wq- m air into a clear material. When the light makes an angle of incidence equal t mt daf 7qvwsl9-:w 8sm1b(f8njz/5rmo $30.0^{\circ}$, 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 refractiy0a5if3 cqs,t)9n;cvqk f h-von n. The laser beam emerges from the material and hits a target. See the accompanying figure for the positio,ia)v cqys 3c;v9kf-n0 th f5qn parameters of the laser and target. The value of n is:

  95.31: A beam of light passes fro265cdndfu6le0rd 8wa12c0 1 bzil ukum medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true aboutf56k0zbea ricd d w028du6un1c21l lu the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown i1fs *oy2swjjf6ctu:mzl /3dl l)j+ 9n n the diagram. What may be concluded about the three indexes of refractio62* :jf )fdyjtz3ms/ o l1u 9lcnwjl+sn, n1, n2 and n3?

  97.24: The accompanying diagrzr:o3 bdf 4 grl+clh4.am shows the path that a light ray takes passing through three transparent materials. Therfb g+. l:34d4l chzro 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 belo2jsfdocv2 pey w,58hrff )02y w shows the path taken by a monochromatic light ray traveling through three media.The sywhs2p,25jecv8 0 r)oyf 2fdfy mbols $v_1$,$\lambda_1$ , 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 geo vv+ :f-v5( voav*malass ($n_g$=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 ok yf.mgp -.n8 ub6a.yjn the surface of a rectangular block of glass at an angle of pk-jay .f6u8.gbnm. y $45^{\circ}$. 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 transmitt-)83i bwv+pmuabx5 h .hfhb 34jc8erred from air into a piece of glass. Which one of the labeled arrows best indicates thwfhma j 4ib-3r)8hb r+ c85xb 3uvpe.he path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-e9 z:o3s0dhzr(x 0i rmtriangular glass as shown. The glass has an index of refraction of 2.00 andzr:0(si9 mzodx3 reh0 it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?