11.24: Two wave pulses travel to the right toward a rigid boundary as shownksfv; lya:4 l7 o3) dgxojxq08. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents y0x qax 8)7vs:of; l 4jogk3ldthe superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam pas5 / g:cgfo xejz508sukses through the air and strikes the surface of a plastic block. Which pair of stategce:/ 5u gkz0f5x js8oments correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in tbm:)d+-phx dthe diagram shown. The ray reachesmbd- ph:d+xt) 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 6q16fxo,1 ltfz no/m dlight is incident on

  05.18: A student hold a hand mirr 6,oneh1 q(wdew+0 7ovps 9pufxl70vnor to observe 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 hand mirror 1 ft behind her head, she will see the ba7e lh+( 1nfvws,96v onwqxpe pdo0 07uck of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a new m8 aoyu ub(991nc kk0liaterial. Which one of the followikyo0lbk 19 9 a8cun(iung choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 5v x vyqk955y-p-t4yna00 nm in air has wavelength 400 nm in a transparent k-5 qyxty-59vvnay p4material. What is the index of refraction of the material?

  98.04: As sound travels from steel into a jg5;(jc0zhy8bjc, oeir, both its speed and its:

  00.01: As a wave moves from one medium to2dthmwf1yv2qz:t 7n. a second medium with a different index of refraction which of the following wave pronwdvtt 27z1fqh 2m y.:perties would NEVER change?

  05.47: A sound wave generated from a tuning fork of singl, p1nc d1i/-b /,hyoquk x;nwzn k.q/ae frequency travels from air (with speed xwyq/ n/1kid p-q/b uohn ;., a1c,zknof 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 air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pok3di(nz 7pl pwh6 /n7sol emits a sound wave tha( pnpd36z/ h w7sl7nikt 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 reccp0 ;ael0bk./q ti.;-fmhd( mcfio , stangular glass block with an angle of incidence daf ,/ei.fcm cohps(l; t- 0b0qim.; kof $0^0$. 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 jgq2;q6v,ypr to the right. Which segment best jqy2qr g;pv,6represents the refracted ray?

  98.17: Which diagram best represents what happenb u lhv1jxn/;7s to a ray of light entering air from water? Air is at the top in all d7luv/xb 1 hnj;iagrams.

  94.11: The critical angle of a material is )szzvog 9/vgpda 1pf;a60u/j x+omb0the angle of incidence for which the angle of refrms og/ v 1z+b0u69zvaxpp) ;/f ajdgo0action is:

  95.12: The principle underlying z m(ssx*d- be 6jbokgy517 5sefiber optics is:

  98.36: The critical angle8ttjj umvo wj)45s9m8 in a transparent 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 wx:4j aqkmm m)/ith an index of refraction of n = 1.5 to materima)jmm4 : xk/qal 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 distinguish betweegs bo;;he3sum ; wpa4qn960xvccvo2 4 n a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an4x3e4c26uc vsv hq; o p b0as;;own9gm 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 lv c 3azt5c.e hjgc,n0:ight makes an angle of inci5zt.,hjv cnac0ce :g3 dence 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 en9g b9k an+:nambedded in a material of index of refraction n. The laser beam en9anb n:9g+ak merges from the material and hits a target. 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 1 to medium 2 to medium 3 as sho7fvtr9d0t ep a 3wo qo+8,ad0cwn in the accompanying figure. What is true about the respective indices of refraction (n1c9qddeo8 3p+ttoafvr0 0, 7w a, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to me qs:6;vo0rly2dq 9at n +*ewitdium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, 9a0ietrv y dq ws ;26*qontl:+n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a imab4*e ntd8(light ray takes passing through three transparent materials. The indices of refraction in mater(a*b nd8 tmie4ials 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 trav:,o*-k c:-u+hj f zqkgh/bfaveling through threuq :o cabj :fhgkf-/ vzh,k+*-e 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 in88 abbeh78voqi +:tf x 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 surface of a rectangular block of glas yj(gtqi( ux*3s at an angit*x (3uqj( ygle 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 glaso8 71p:r,4hqlq q0vq ahen.wh s. Which one of the labeled arrows best indicates qer .n qh qq81 4hvho0ap:,7lwthe path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters scsbr x .p+1vv7qq34d the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the 4p1 ssrvbvd+ 3qx .cq7lettered rays shows the path of the light after it exits the glass?