11.24: Two wave pulses travel to the right toward a rigi oupmiqb /i4z*if3 o69d boundary as shown. After reflection of the triangular pulse, the pulses will interfere.6 po *m oibq/4i3z9ifu 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 passes through the air an7 o,x./*jnq dsxkdws3auck9 ,d strikes the surface of a plastic block. Which pair of stat/*sa3q7 ,dkkdwxuj no.sc,9x ements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes sqj 94qte -3:cmxx5ukttraight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror plqtqmuk j 3x-94e5tx: caced 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 reflelt w 854a,x5s kol3dkyction occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of he) 4lsvx8r23ohvm+ iitr 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 will see the back of her head hos)84lvt xi v+m3i2 horw far behind the wall mirror?

  14.25: It is observed that a light ravs;4z m:l.yczy changes direction when it enters a new material. Which one of the following choices is the term best associated wmzzy 4slv:;c .ith this phenomenon?

  96.19: Light that has wai il.6h6vp u*uvelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the materialu*.piuihv66 l?

  98.04: As sound travels from steel into air, both its speed and 7itu, *-faa *plh7cdb its:

  00.01: As a wave moves from one medium to a second mediumd:n lgl:.8ls9lwdt4w)jnc, v c 40zbe with a different index of refraction wv: tn8 lgcw.nezds)w ll0 9b4lc ,j4d:hich of the following wave properties would NEVER change?

  05.47: A sound wave geoo4kg+q r1o:qh spmxu 6 33wb-nerated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (withr63x3 +h- g4ousom:bq 1koqpw 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 swimming pool emits a so :+y5qsfrbxd;und wave that travels toward the surface of the water. In the water, the sound+fysxr:db5 ; q 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 a1/9i.yti9m ovz7b7ilvh32 bjnl8 tgmngle of incidence of 3tb7yg.7 9 /lvm tl1ii9nvhjoi8zmb2 $0^0$. 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 poiy6f xwh9d 9j1ont P on a boundary as shown to the right. Which segment best represents the refracted r1 wxyj ofh99d6ay?

  98.17: Which diagram bz 0mg fymkp)fl)a(4r9est represents what happens to a ray of light entering air from water? Air is at the top in all d0 94mp gyazf(f)mr k)liagrams.

  94.11: The critical angle of a mat -5)-dhpvjj1rzzqrq 7erial is the angle of incidence for which the angle of reqv5- d) j-zz1jhp7rrqfraction is:

  95.12: The principle underlying fiber opig 2xm5.s54 jnh/i *cfr ich()ighyh+tics is:

  98.36: The critical angle in a transparent sup8ate 6dji52e9 ckk:dbstance 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 materia dfx+vbbt 14x4l X with an index of refraction of n = 1.5 to material Y with an indebf bdt x41xv4+x 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 bu ytmuqb 3ci;i5v8y::etween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refractio vy3ui8bq:;i ty5ucm:n 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 airn. 0jgj-tbtdtpt2 0np+m1q /w into a clear material. When the light makes an angle of incidence equalt0q /t1 n b-j+.m20dptwpn tjg 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 refra5s0 1n xugi7dzction n. The 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 d1x7sz 05nu ig of n is:

  95.31: A beam of light pajt5 t8+qu lu t,lv:,aysses from medium 1 to medium 2 to medium 3 as shown in the accompanying f:v5,+ajy u,t tt ll8quigure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to mtk g43 odaw m(,;ler ;olex5a m6b(8kumw2,qtedium 2 to medium 3 as shown in the diag,wek 3luttolgkd2;,ar x6(q mm m5;4 bw8a (oeram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passqbrxj*tdz831;pnd/v9z;p f* t a3vc hing through three transparent materials. The indi;qz vbhxv 1f8nz3/t;3 c9da p**dp trjces 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 9yo.vf4 ,mhfx ku;a4j by a monochromatic light ray traveling through three media.The symbols 4;haokfjuvm, 4fx9y . $v_1$,$\lambda_1$ , 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 travbe)(c evmh 06: 7exbdneling 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 incidendc-k/cgkc d5 )t on the surface of a rectangular block of glass at an angld) g -cck5cd/ke 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 into a piece of gl. 2snmc naq)2 *kd:iw9.on6 uhu(vfgb*r2glmass. Which one of the labeled arrows best indi(g26 rs*qc2b* .nl2gawfuhu di)m n .v9:nomk cates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters th4o o+t.mnmj /qe right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass? o+njom/t m q4.