11.24: Two wave pulses travel to the rij:1i.p3e0td- 3pvlwj0vtvgs up j2 j vj ;v4k3ght 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 pulses3 gw00djjvvujpv l: kjj4v sp .3iv-tp1;2t3e coincide?

  08.30: A light beam passes through the air and strikes the surface of a plastic l kkt we.vs;b52iq 3p+f9)cze block. Whi+ ketb923lqf kzsie;p vc.5)wch 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 the pointem.cj)cn6 w/wa ht: /cnki 0f. labeled B in the diagram shown. The ray rej/w.: w /6hntenkcccf)a .m0i aches 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 whenever light is incidenys g,df*, 0eovz 0sq3tjeu 52xt on

  05.18: A student hold a hand mirror to ob3ayl3 +f:wn hsu6 b;rgserve 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 ha3r6b+g nh3: fa;ylswund 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 changesr mrwl,n. +pgzd4*)v a direction when it enters a new material. Which one of the following choices is the term best associated with thidmvpz)* g.,+rwna rl4s phenomenon?

  96.19: Light that has wavelengzfwk-x55/iundg 6e 8acw 9hpq 99t3g hth of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of rc993/ew ahk6tu5 hgnp xwd -zqf9g85 iefraction of the material?

  98.04: As sound travels from steel into air, both q4hzjg6r ckfqah0) 66its speed and its:

  00.01: As a wave movesyyc0/d1 tlw3p from one medium to a second medium with a different index of refraction which of th3p /c y1ywtl0de following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequlyiw +yu8* f /ryz4qd:ency 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 frequencyw /dylyi rzy:4*u8fq+ of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swyc2j ;)krn 5kn kyge-4wuu2d 2imming pool emits a sound wave that travels toward the surface of the water. In the watern2gky 4u 2 k5-rd)w 2ckjyen;u, 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 recta6yby clpa:50s lpmt8 fiq5mw53dz8(angular glass block with an angle of incidend 6qt8p:5l08li35zcm b sa5mfyp yw(ace 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 direcien )x89y/srated toward a point P on a boundary as shown to the right. Which segmenex)a/r9 yi sn8t best represents the refracted ray?

  98.17: Which diagram best represents what happenso4eo;m3-jo j:c -gw8olhuh/w to a ray of light entering air from water? Aih/:j oum-8o;oh cgo4w3j w-ler is at the top in all diagrams.

  94.11: The critical angle of a ml f;(ykf+hs8)7c ro ned 2xa6katerial is the angle of incidence for which the angley(kl +soche;28d7ffra 6 kx)n of refraction is:

  95.12: The principle underlmyi:e l 3qok8 (0uf 4+vkdd7dmying fiber optics is:

  98.36: The critical angle in a tr10yme nim 11nkansparent 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 fr*+mt+uj )tp n1lzlf y/om material X with 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 material Y is v, what is the speed of light in mate l 1p+ tjlutnm+/fzy)*rial X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by o3om - a;xi8*0jl o: 6f1um:blmgycmt ubserving the my83l1lx *g ijb mf:ooma:;6-ucm0u t 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 from air into a clear material. When the lig,8ntg90(thi vieguc 8v 5bdrjf: g /(rht makes an angle oft85(f,vrev:t g(jng 9ibhu/ cg0d8r i incidence 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 is embedded in a material of indenss j5r,uv;vuc.5 l*i x of refraction n. The laser beam emerges from the material and hits a target. See tiu5lvu, vc ss;n5*.jrhe 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 1ao *qp);+zuqp m+ a8he to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2pa*qe uaohq8pz;+)m + , and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to x8vk 9dxc)( 9 u .8 /hr(tbdotem(fdodmedium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?d (fcrb9xu()9 kd (hv d8 mo.x8toed/t

  97.24: The accompanying diaejh t : 1eod:gj,*cpk8uc5h- egram 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. Which of the following c:dcjoh e-*8 : 1j kt,hg5eeupbest describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochr+z;qy)ir s+loy,rb frn7 v::c omatic light ray traveling through t ivr:lcnr zsq7)oyf r; :,y++bhree 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 t ezfcopj8 7iij9,d(q1mdjj03x( +n mkraveling 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 sur s:gwuea39)dig/ qq)5oix-a (v- iwzeface of a rectangular block of glass at ao9z )iwqgeiuw 5e/vdqx- :gas i3-()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 600nmo1 iff* t71tjs8wo 67jx u9qhk is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray af xjj1kq9f7w uh1t78*s 6otfio ter it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangu73z 0rmtuldgs()w4x wlar 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 liglzt7 um w03 4xsrd(w)ght after it exits the glass?