11.24: Two wave pulses travel to fs i/octg+8l: 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 tht8:o/ i+ lsgcfe superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passkm47s /n. x m(v-kq 5b/bojxbnes through the air and strikes the surface of a plastic blo- (vomkqjbbsxnk7m 4/b5n x/.ck. Which 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 through 66y irvt0-qv,m t*q7ze ,ehfx the point labeled B in the diagram shown. The ray reazte07v,evqqxt*ry 6h f,i -6mches 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 reflecti 7necot b):qh,on occurs whenever light is incident on

  05.18: A student hold aep8f0d ,ok: oj/+ev + gv(+,.rkyiv0 pgtqmnb hand mirror 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 1 ft behind her head, she will see the back of her head how far by +,dnpe+gv io k: e0pj r(ob+,q.v0vk/ftm8gehind the wall mirror?

  14.25: It is observed t fk29 qs-m(sjthat a light ray changes direction when it enters a new material. Which one of the following choices is the term best assok-s mj 2tqf(s9ciated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelengc6xq-4 +kjddi+uv d0h th 400 nm in a transpard4hqcjdi0-6xv uk +d +ent material. What is the index of refraction of the material?

  98.04: As sound travels from steel intoe)jl v/qylr; 0nqw( w( air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differeedvm4gm0 q1x hn/j+ l:h/+uua nt index of refraction which of the following wave properties would NEVER cv14 m+/ uh0x l :guhemn+da/qjhange?

  05.47: A sound wave genenlxl, y:m-2qokw0* lb rated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statemenl2:lqn lm0xy bwk o,*-t 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 emib fqcvh)ar c wq :dm*44;x7l(cepg ;5sts a sound wave that travel:w 7l5r s(q p4f)gdcxcbvq* c; hm4;aes 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 lig o*-fv3v7f2hx bu-djk ht strikes a rectangular glass block with an angle of io xdf*-v-7fkh2bv 3juncidence 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 tsaa:,g9dw)q f,rp 77 m4vza* ezpluf7o the right. Which segment best represents the refrac7ad74)r zze9svaff u*lm,7 pa : ,wgpqted ray?

  98.17: Which diagram q*o,+e,x0acb ; cgcocbest represents what happens to a ray of light entering air from wato; b,*qoc0x c+ c,ecager? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of 5yy3+;ba : jwiqk)kzj incidence for which the anja yq+y 5);3bwjkk:iz gle of refraction is:

  95.12: The principle underlyinntj8r- lgpof, ;; (brzg fiber optics is:

  98.36: The critical anty 5s)u,mw36*vkx wnvwptttbu82z1l ,- 7ib ggle 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 material X with an index of refraction of7m i2amo (9ogc n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Yg7m2 m9( acioo is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between je1iq6 (+aul*55g- v;ebyxxus zy; xp a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refryjxa ;6s(-q+e xbz;iu *evupg5ly1x 5action 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 litnwz ld7-i; o z3tm;d;w7)1pcqzqe*f ght makes an angle of lw- zn 17qofdz*7 3;t q;ceiwtzd);mpincidence 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 i h +bgn ek(dk)m4of/o2s embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying o+oe )4kgh2kmdf(nb / 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 2 to mqpa 67p1p29tchg mp)hqf8y /fedium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, at8qf2m67pq/) h p19cppagyhfnd n3)?

  00.14: A beam of light passes from medim7b fy1wx,5v4n4 +etldlfj6 kum 1 to medium 2 to medium 3 as shown in the diagram. What fyt5e7,41+wn kj xl f4vbm d6lmay be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the pathyfnls/9c icgn4 8va6k.0 atd78fg:hl that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, resy40a kc7 dnlg9acih /nfgs :86. v8ftlpectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows w,pl2sg+e bq 06iggn.the path taken by a monochromatic light ray traveling through three media.Tbpg en+swgi 0.2g6ql, he 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 travelin:qg5rl4u7qj7 k 4/. yetgwv sag 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 surfp)y ,/pu(pssnwvzut* f2k7 5vace of a rectangular block of glass *f)unuv 7szkpt w2(vp,5 / yspat 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 into a piece of gx;u1qjpj6k , rlass. Which one of the labeled arrows b;ukj1x,qr6 j pest indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triazuqe0a- as.p; p2o*di te a- t3.a)zihm (5fbnngular 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(az- .zopa52ati*qdfa0 h)eu b-e;.psnmi t3 the light after it exits the glass?