11.24: Two wave pulses travel to the right toward a rigid boundary c6jf+w+ am /fu ;lct,yas shown. After reflection of the triangular pulse, the pulses will interfere. Whtfa +/ymccl;+wu 6 jf,ich 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 and strikes the s zz* 1maf8e(mgurface of a plastic block. Which pair of * 8ze(afg 1mmzstatements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straightn (m -hg69tqyr,hoja ( downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an an(6ty -(g,jmrhonq h9agle $\Theta$ 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 incfc9z) 6gn1ha/awdwv.m: s.yuident on

  05.18: A student hold a hand mirror to observe the back of her head while sl595nna:vsv2-jfu,xh jcxyn)0; g tmtanding 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 ftj ;n 9-gh5xs:v anmx u25y ,)fjtvnlc0 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 d.vs9)fe6fmt vym);y direction when it enters a new material. Which one of the following choices is the term best associated ws ev y 6.)mvt;myd)f9fith this phenomenon?

  96.19: Light that has wavelength ov jv5p 1uodli,/,:irf f 500 nm in air has wavelength 400 nm in a transparent material. What is the inuij/drpiovv: 5,,l f1dex of refraction of the material?

  98.04: As sound travels from stee(za s+o vcyq6ssx6wx rw24;)el into air, both its speed and its:

  00.01: As a wave moves from o(:gyrll g 9o*cne medium to a second medium with a different index of r*llc 9g:g o(yrefraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frekayhk1+:v2ka:a+ f kaquency travels from air (with speed of sound 340 m/s) into rocf:ka +2k :y+akka1v hak (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 oce ; bc8p8ekmsep3x02f a swimming pool emits a sound wave t 8xkc ec2epp8s0;be3mhat travels 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 light strikes a rectangular glass block w4rrm2i bj3 l 8xl1e,lqith an angle of incidence of 823lr1 mr4e, ql ljbix $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward dxg9n0wtyhcv 2l 2z4u2u3- ksa point P on a boundary as shown to the- g03suztl2 nwx2dy49ch2 kvu right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering *wn)nz w p46sdp4-t3uoei- r me2m05d) uex lrair from water? Air is at the top in all diagramo 0sp 524p ltnrrwzidmu)n3)d ee-*4ex6 -mwus.

  94.11: The critical angle 1n,:x f /xgbjaof a material is the angle of incidence for which the angaxxj1gf /,:n ble of refraction is:

  95.12: The principle underlyz31af kjt8u x9ing fiber optics is:

  98.36: The critical angle in a tra6yye o9s20z past m*w.nsparent 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 refractio5(plvp- ; jkq+m i4wodn of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y 5p;+dk im-4j( l qvwpois v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piecfuwfv75f( 2b4czr k4 je of glass by observing the critical angle of the light in each material. Glass with an indexzvc fr4kw2 7(5fubf4j 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 from air into a clear material. When t-vrr.in z18u*rk ;.uw1auf j yhe light makes an angle of incidence equal.kfv u .rruuni y18*ja1wzr-; 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 materqo pu0h /h/i6csnd.+yial of index of refraction n. The laser beam emerges from the material and hits a target. See the acc6/d0usnqhoi cyp +h/.ompanying 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 med+)w nssphcm(b y (j lb5/-zdl yz,ho7*ium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, sy/zyd-mbhsh(lj l nw )5(c,zo*7+bpn2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown j*w;:jsulqa g0urut;f vf);1in the diagram. What may be coq*ul;w fg u)f vrja:;0s;1jtu ncluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path 8qg0l a mu 3;ohzz6hy4that a light ray takes passing througz y38aouh m;0qg 4zlh6h three transparent 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 path taken by a monochromatic light nyn d2v(orib gbh w n*8 22+9vdfps5u 7+cmq(sray traveling through three media.The sov cs + hw n*2rqs9(i22(mbv ndydufb5n 8+g7pymbols $v_1$,$\lambda_1$ , 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 transas py/i9* myl 46 q/-pvpwz7veling 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 incidenxffra6:l: 0gb 4w5b nb4bkf )yt on the surface of a rectangular block of glass at an angler b0n:ba)6l5x4ffk4f:b b w gy 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 +hkd8 2imt:yc piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the gla8ctihd+ k:2ym ss?

  14.44: A ray of monochromatic light enters the right-triangular glass as showt+afj5l4: 38mhq. o9 qgnbgjhn. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered r:g3 tfl.qga9b+hn moh4 8j5qjays shows the path of the light after it exits the glass?