11.24: Two wave pulsz+hose14yth.ee l i)(es travel to 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 the superposition of the pulses when the centers of the individual pulseee i1o.eh )ls+hz4ty( s coincide?

  08.30: A light beam passes through the0dz.akh.ywho0 g lyfb 158r c8 air and strikes the surface of a plastic block. Which pair of statements correctly bc kza0 w.y8o10lydh8fh g5.rdescribes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes st1ii2 5zg uznwvrwh0rjrhf1m:t r2; .*raight downward through the point labeled B in the diagram shownzzgf w2*;r1 vnh wr.u102imri h tr5:j. 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 whenhokzhu:t /pv,2 / 9iyaever light is incident on

  05.18: A student hold a hand me( + abg4 6,irnp(trxrirror to observe the back of her head while standing in front of( 4(nr6abrp,r+etxg i 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 behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it q-fzlgbgy) 5-q4+lj oazk i9u2c. 3 iwenters a new material. Which one of the following choices is the term best associated wi4lg)u 3ao-.q5i2fb j+kzq-w g9l yczi th this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wrarg.d d*p(.5pqm q j y:(;h6 xx;rrqrl0ne ,havelength 400 nm in a transparent material. What is the index of refraction of the materr;e .rrx *qq;:5glhpq0m r h6a(x nj dy.(r,pdial?

  98.04: As sound travels from steel into air, both its speed n9(g9s(qbq;(qivh qqr e r50cand its:

  00.01: As a wave moves from one medium to a seconb;7hao( s 6fzw 79grtrd medium with a different index o(w7fh ;ar 9zr6 tobs7gf refraction which of the following wave properties would NEVER change?

  05.47: A sound wave ge o0 l3b))ix6:vvtvp:jvuehn6nerated 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 statement is true about the wavelength and frequency of the sound as it passeslv:h6n pji v3et) o:)xvvu6b0 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimmitl 7kc(b9-xa 3g7w et ccdcxkpoi.38/ng pool emits a sound wave that travels toward the surface of the wate9pki8xeg7okxdt(a lw c3-c / c c.b3t7r. 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 rectapxt l1rd -by,5h91;ury g arvb3:on 7ungular glass block with an angle of incidence 1ybv9byrl7ad5 roh np;3 tu-1g: rx,uof $0^0$. 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 tobi*5t 0fx1wnwjz(kk v dl2 7:g the right. Which segment best represent5lx2i gjnbfvkw0(k t:d*z17 ws the refracted ray?

  98.17: Which diagram best represents what happens tot) d zkh1r1u:u a ray of light entering air from water? Air is at ) u1duthz1k:r the top in all diagrams.

  94.11: The critical angle of a material 4b2 buk/x48aqo oa)oeis the angle of incidence for which the angle of rebu ob4k 2aoq)/oeax4 8fraction is:

  95.12: The principle underlying fiber kdukesgc5t.pv9 sh 3n k4f7.9optics is:

  98.36: The critical angle in d bhllfodi s0(064yp, 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 matm/tgl htn5p4icx96:s erial X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speesx n 5tpg4 tm9lc:i6/hd of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by obse8ie8l lg-selll/m7 3n.o gz)mrvil.se8m/387-iegol)lnz m lglng the critical angle of the light in each material. Glass with an index of refraction 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 fre5k45,aaa y(jh bqo; wom air into a clear material. When the light makes an angle of incidence equ 45a5jba ( wyeqa;ok,hal 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 ofjn d1h-nxqdsn c2j6wa+8v .0 f refraction n. The laser beam emerges from the material and hits a target. See a0sd6jnnnc2 dv-w f1 hq x+j.8the 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 2 to medium 3 as shown in -u3mz t/ hkbo: pexk;3the accompanying figure. What is true about the respective oxet;u :k3 /hbzp m3k-indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium e3+.+agzxn(wgd.r hl 1 to medium 2 to medium 3 as shown inh rgewa.lngx( z.d3++ the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram ea.tuj.8l au5 pq;t)*bk hmr 3shows the path that a light ray takes passing through three transpaheul;)bp a.q* t5m a ujt.8k3rrent materials. The 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 below shows the paoz0/t*5i t rvclv8 3fnth taken by a monochromatic light ray traveling through thr8 3nfv5zvc0 rl ot/i*tee 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 lighjzdznwq- zn*i/.2j 55ymfg ( at traveling 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 t 26kto*ck1: cix2czkohe surface of a rectangular block of glass at an an* 1k c2ck:itx26 kzocogle 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 h w5rl58ido 15x3h2k bjhv3y,esi lg: a piece of glass. Which l5sjhg k5idi31exy o 2rv w58hb,:l3hone of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic l0shu- . qe4c9cytc-o5lql )kright enters the 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 patcocu-)409r . sct lykq5 qle-hh of the light after it exits the glass?