11.24: Two wave pulses t4.xyys0-5c6 jqkde ibv 9b/ duravel to the right toward a rigid boundary as shown. After reflection of the triangular pulseb-sv./e dx y60bu59yc k dj4iq, the pulses will interfere. 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 and str w*s9-4* armpxmbkd,iikes the surface of a plastic s pa*k*dx4 9rmb,-wimblock. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes s tu:8 8o2 nbxzsi6cx*ktraight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at ao28c8 xtx ubzi nk:s6*n 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 b ugpd2ul;+4r r3k m9*( d eewva03gfxwhenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while st l)-lgdvl-r i zpz,x qt3q,1z* yfe,z+anding in front of and looking into a wall mirror. If she is standing 4 ft in front of th lldzzz- iy31+ v pqt) ,-,eglrxq*zf,e 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 observedi)h)j7y4vm;l+x6 c- t wsg axz that a light ray changes direction when it enters a new material. Whi)c7haj t sxiyg xmz64;+-l )wvch one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavel kuv0i,9 rcfw-usw*3q ength 400 nm in a transparent material. What is the index of refvuw-0,f i9k ucws*r3qraction of the material?

  98.04: As sound travels from steel into azvawd lt a(5,ff5*xr:ir, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differel0txynnu;d-+iv vss n 7(;+iint index of refraction w7nv (n+;tui-snls i vd; xy0+ihich of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels ftc -y/ts+5d s6-uktoc ttdz* 1rom 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 k d1ct *6o--+tz/csttys5udtpasses from air to rock?

  14.28: A waterproof speaker placed athtn:u nxohv/e7+ qg9m9 9i2jiod 5lc1 the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the s:x+ je29nni/ogu9hdic9mt 5q lv 7o1hound 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 psz; 7: a+lgap.uw95*egrhnq an anaq l e:hu+p ; *r5a7znp.wg9gsgle of incidence 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 to thstf(5xracc*1jy;; nu 2dz:oke right. Which segment best a1zsrj2y ;; xu :cc*5not fk(drepresents the refracted ray?

  98.17: Which diagram best represents what happens to a ray ofp-vy b 8*waza8pkn+f4b; mfi6 light entering air from water? Air is at the top in all w 8 8y4z p;pba i*bvkaf+-nf6mdiagrams.

  94.11: The critical angle7b ooa x1g+7jjru m.,e of a material is the angle of incidence for which the angle of ref 1oj. ejbao77,m+ gruxraction is:

  95.12: The principle underlyingy.( lay2 2b(xrcf h(ue fiber optics is:

  98.36: The critical angle in a transparent substance surroundedv7(vg)f tu:l 2kgzk5 z 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 woo/.sroidbv cf3 ( ;/u3g v)rjith an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in b.vo;or3c3sv(/r)i/ oudj fg 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 oftgcl1;-2a ot e glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a criticalt;l-ec12tga o 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 th:p w 5p cry-0rr26zwhp*kb/lse light makes an angle of incidence equal to0rkppzh*ps/ yw6r- bcl 5wr :2 $30.0^{\circ}$, 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 in w4nldoh19(eu*fwv12 fg xad -dex of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the l 1 *2xdwv9a 4ngwh -defo(lfu1aser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium w. 8hjnqn4:o b.h)ftljzk8 )m3 as shown in the accompanying figure. What is true about the respective in om:zw8l8q .j)4hh )f tjbkn.ndices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 ccc;nt* gtk vh;u w832as shown in the diagram. What may be concluded about the three indexes of t38u*c;tcg ;knchv2wrefraction, n1, n2 and n3?

  97.24: The accompanying diagrai (al8n0s0qqc biov2.f6di/l 0dh9hom shows the path 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, respectively. Whi6/a(si090o h iq oihfdv8dl ncq.l b02ch of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a mybvgkb .u-0c4u nf:- konochromatic light ray traveling through thrg--f uk c4.k:bv0 ybunee 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 light traveling c ki/ *yeohf93in 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 e,sca1i7nv8 bh fb92 nsurface of a rectangular block of glass at ab h81ec,2 7sf binv9ann 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 glass.at0js-sj8 hm2 Which one of the labeled arrows best indicasht2-j8 0ajsm tes the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enp ej :.6geuvj(ters the right-triangular glass as shown. The glass has an index 6epjj. u( evg: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?