11.24: Two wave pulses travel to the right toward a rigid boundary as shown. Ae3vhl kf6zid:pc,. w.fter reflection of the triangular pulse, the pulses will interfere. Wpcz6,. dwi3k:l fh ve.hich 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 6mj6,,ry lsnzdq l o79the surface of a plastic block. Which pair of statementr69lz7yqljd, m n 6,oss correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward y.e2q n4*gpqlthrough the point labeled B in theeyg*. pl4q 2nq diagram shown. 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 whenever light is incide03ykn)ivmhj8f 7* tiynt on

  05.18: A student hold a hand mirror to masm0li) b3wh(u jzp 5.(are9 ;y fd mz-h8y8tobserve 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 haf-szhler.y;tm0d y(iw8ubm) 5zh 3ma (j8p a9nd 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 enters a ne;7 wrz3i(jzqq w material. Whi zz73; irqwj(qch one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in airg ppw34s; no 3jky*kn0 has wavelength 400 nm in a transparent material. What is the ind sy3jp3w*k nkg 0n;4poex of refraction of the material?

  98.04: As sound travels from steel into a, tyzip. .7c*zhcqm/tir, both its speed and its:

  00.01: As a wave moves from one medium to a segr:n bpy9hwue-m 1 xww6i/w3ob9w8u7 cond medium with a different index of refraction which of the following wave properties would NEVER changeinpmye9 w3:w 6 7wu1obb9-w/ hwu x8rg?

  05.47: A sound wave generated from a tuning fork of single frequency travels fk; y1. jpr:lqj.yoy /9 zd2mxrrom air (with speed of sound 340 m/py l:xmrjod 1.q9y; j.ryz k/2s) into rock (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 3(z ;ek qz8fjvix;r. 0cm1tqq3wj. bobottom of a swimming pool emits a sound wave that trav.vjizc. kbe t3j(q3z;xwqo;q 1m 80 rfels 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 lig3a8:gyecyw l, b1tj 4aht strikes a rectangular glass block with an angle of ib e:ta3wl4aj 8 yygc1,ncidence 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 bounlqhr *t0a+,wd dary as shown to the right. Which segment best represents the refracted ra,0h rt*qd+lway?

  98.17: Which diagram best represents what happens yjteigww1h p5 n5:9h1e/if8 s to a ray of light entering air from water? Air wih5p:/19jgnf8 e1tih s 5we yis at the top in all diagrams.

  94.11: The critical an dm 8bz+f;pa+ugle of a material is the angle of incidence for which the angle of refr+dz p +fmab;8uaction is:

  95.12: The principle underlying fiber optics ish v+s: ql77oeo:

  98.36: The critical angle in a transparent substance surrounded by /u,g4 l qhl/ipair 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 materia2. kvghoj n f15ef5h7zl X with an index of refraction of n = 1.5 to material Y witnkh ofj75fh v5zg1e2.h 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 material X?

  03.15: A jeweler can distinguish be.q- vif,7zq8y6;kw-gsg ifqp 0y or6etween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a criticiio-q.yfgp r;e6 v8 wqgy0 qfz-s,k67 al 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 light makes an a/w:vfxcd + er5ngle cvw/+f:dre5x of 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 index of refraction n.e+wzd8t.t5i a The laser beam emerges from the material and hits a tad zie5.+ wta8trget. See the 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 v/nf mge82 )c( ym0pqx1 to medium 2 to medium 3 as shown in the accompanying figure. Whavn0 f8(ygm2mqpcx) / et is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mes 77nam:9 hpcidium 3 as shown in the diagram. What may be conclnca7 sm7i9ph :uded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thtir y2z1y(ohlitoi adr,) 3-5 at a light ray takes passing through three transparent materials. The indices of refraction in mater( 35i-ho2iaot d1ztrl y)yi,rials 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 ray trave:bo:e r8k6 av.mg t-juling througrtg:8 auobm-:vjk6.e h three 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 in glwpg4ke.qw ql*zqpg+x7j(epj ng 0 91 7ass ($n_g$=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 in: wq5azw3z9l s incident on the surface of a rectangular block of glass at an angwqlnza 3 :zw95le 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 transmitiv* lcw4f6zx z0,* palted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after0 6xvzil ,a c*plz*4wf it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as show * rj um8ap6wu7d0z1z3bto -mbn. 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 ofu 3 pjmd*-ba0m7w618zoz utb r the light after it exits the glass?