11.24: Two wave pulses tra g4 kgg;pye49xvel 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 superppgk geyg4 9x;4osition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes througy 6d54pc1nt4y:a/, b- bvyftdgw)pajh the air and strikes the surface of a plastic block. Which pair pjtay vabw c:fby,/4164ydg dp-5tn) of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pt8gdtm(h-y8o a rm0p3/dc1 v passes straight downward through the point labeled B in the diagram shown. The ray reaches a fl3ra8(m dy8-gh dot1pcm0 tvp/at 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 v.o5 mnwdn0,bincident on

  05.18: A student hold a hand mirror to observe the back of her hek7karbm4 ysv (**2o98ziy ; z8iv)frnf+wea cad 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 t7n yf9 +if4ik* *rmazvy 8b k)szav;ce8w(or2he 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 enters 32b;r arpyoxz--dt4z4 )can wet3m-6 ocymd 8a new material. Which one of the following choices is the term best associated with this phenomenon?d4cm)m -cb-2yxda;z p8rtr34nao tze 3yw o6-

  96.19: Light that has wavelength of 500 nm in9bp.pdvedh /*p65j y s air has wavelength 400 nm in a transparent materdj5dp9e*phb/p.v s y 6ial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed dbh 9dnp-/3zykrpbm1 2c1c:k and its:

  00.01: As a wave moves from one medium to a second medium with a different t5jwvdv5d :k +index of refraction which of the 5vwt5j d :dv+kfollowing wave properties would NEVER change?

  05.47: A sound wave generated from aa*wyfq5qz k p7t c05)e 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 passes from aiw)qka pc*yt 05ezq5f7r to rock?

  14.28: A waterproof speak sgnn-q/ql h20er placed at the bottom of a swimming pool emits a sound wave that travels toward-ngs0 ql/2hq n 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 strikeswn tbx5,2 +jns a rectangular glass block with an angle2s, 5twb xnnj+ 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 directafd.aj+j ) ic.ed toward a point P on a boundary as shown to the right. Which segment best represen).i.aajj fd c+ts the refracted ray?

  98.17: Which diagram best represenq*s857p6z6sui)ss d s* k dq)wdwt8qcts what happens to a ray of light entering air from water? Air is57qs6dd)88qqs) *z cssp6uwi*w sdkt at the top in all diagrams.

  94.11: The critical angle of a material is the angle ox94kgqp* igak f p;0.xf incidence for which the angle of refrack 0gip; k9*x x.aqgf4ption is:

  95.12: The principle underlying fiber d:gibb*ho;1hvn) cy 0optics is:

  98.36: The critical angle in a transparent substanjhxki 6w3n,y( pz+s b0ce 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 o7: yjy1u(ig+55f.p lg zuduopo b /s:index of refraction of n = 1.5 to mate:s7up/b.l 1gyu5 id5g oo(y z+j opu:frial 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 material X?

  03.15: A jeweler can distinfe3 c.(/s6ls g brfz*kguish between a diamond and a piece of glass by observing the critical angbs(rkg c6 *z/s.eff 3lle 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.jcx:tl xu- 6p- When the light makes an angle of inciden x-u:pcl xtj6-ce 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 lasecf/z99)sx4 j+ py,9yef rl 4clxwok5 kr is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. Sexr/9 cxs49cl zfk9lp ky fwj5+)eo,4ye 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 1 to medium 2 to medium 3 as shown inabv), yzr,*hc the accompanying figure. What is true about the r,bhavc*z )ry,espective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light p,kz5hy6 xrf5l eih), casses from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded abxh6 ekzcf5 rl5hi,,y)out the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes pa vzo8 )x n0*t, nugutx)tf5po/ssing through three transparent materials. The indices of)uu*n txgt 5fx,tzo0v/nop8 ) 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 monochro+66j.yhh;lyj6a,+(8 )izy wdh uxgden n(i sfmatic light ray traveling through three media.T i(6+a6lyhny y x.fi)j;eg(nhsj 6wz dd8 h+u,he 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 cy;+ 6 al6v55ini5oxm. fuaxm 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 d.b2nbx/p*xyxh1gs6 ab ; sc k3 ffk))incident on the surface of a rectangular block of glass atbhxsg s*1 6d2bpcxf ak x;/ny)b f.k3) 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 600nm is transmitted from air into s+g8eaiwvzxq z7if /g:+, uy 0a piece of glass. Which one of the labeled arrows best ing8,0zeuvx s+iw+ f/zay igq7: dicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the r8s ;.bz 3gj7wcytskzmrn3:a *ight-triangular glass as shown. The glass has an index of refraction of 2.00 and it is n3wgkym8sj7zbra : 3; *zt s.csurrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?