11.24: Two wave pulses travel to the right toward a r;:q8v uor;6 :hmrh frvigid boundary as shown. After reflection r v;r6:uf :qrhhm 8vo; 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 pulses coincide?

  08.30: A light beam passes through the o0 g/jl7jdyh3mm4d33a 0/ jyxp4uvdz air and strikes the surface of a plastic block. Which pair of statemejl3/uxy4od34pd03 /yamg jm 0 jhvd7 znts correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight1z7 ht t3*apnih ue-,y*dfw-g downward through the point labeled B in the diagram shown. 7t,zndefg3*- 1* hw u ypi-tahThe 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 incideno6e.tc++kv7ow0wq venpg 5c5nc7l -d t on

  05.18: A student holft w9ex(blyt)10 1 hlzd a hand mirror 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 shzbt ftl()19 e1 ywlhx0e 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 observed that a light ray changes direction when it enters ac2t i c:z9nlcf ayk:kmf,s y/9j4q.v . new material. Which one of the following choices is the term best associated wi 9:kkyyi.cf: / mjv .fa4lc9nctz ,sq2th this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has pypf9/ hs pa+w/f)whj7c:dt ,da vo30wavelength 400 nm in a transparent avphfy 9fw7ops0,:+t/ 3awd c)/dhp j material. What is the index of refraction of the material?

  98.04: As sound travels from steel intcy5w x27 4*if4lcskki ( 7vwbro air, both its speed and its:

  00.01: As a wave moves from one medium to a second medizun,bnl6 tl yj 8un ikvqv kr-,h8;b)i( m53f1um with a different index of refraction which of the following wave properties would NEVEv,i(zyq -kh38,b8;6nn)lji m5 ultv nbufk 1r R change?

  05.47: A sound wave generated from a tuning fork of single frequency jdmm qs+fe+6b0) ysl +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)jdfl+m m bs0qy++s6e of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the botto1 : co)/v xdsxsm,wks:m of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sovs ,mo/:k :)xxcsd1wsund 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 r ( z1f(4cnvo/lqogn/ a rectangular glass block with an angrvgq /n4 1zofc/(no (lle 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 towardf31o (jbbjiq-qf0s8ps * jpj+ a point P on a boundary as shown to the right. Which segmentp sj1jbs (bfji8+3jfq0 oq -*p best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entx.2 6ub aeka3bering air from watebabk ae3 u6x.2r? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle oln8)5dpzc bqd20rn 9cf incidence for which the angle of refracd9qnz0rp cl2)b5d 8nc tion is:

  95.12: The principle ptys xa;,reaxw2k*x4,- 0rav; s x h/kunderlying fiber optics is:

  98.36: The critical angg vc ):v s eo*b-ce+en;d9wn8dzsiu*7le 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 with an index o.c1zl o67vys, 5nhv m3*njix qf refraction of n = 1.5 to material Y with an index of refraction of n = z13lv6inxjys h*vc7 5 .,mqno 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 between a diamond and a pie:q *6v5xutqn bce of glass by observing the critical angle of the light in eac nx*vqqb:t 6u5h 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 fromsw**s migov tu1.h.5m ua5l8i air into a clear material. When the light makes an angle of incidens a 15l.uvimgu8s ot5ihm*w.*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 laser is embedded in a material of index6i0 gae4 xkk/m of refraction n. The laser bm/6ea4kg x0 ikeam emerges 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 toyjtjw/w ;+h 9wg286jp3mm bu x medium 2 to medium 3 as shown in the accompanying figure. 6u+ 3 j8mm;yxw/jwjthw29p gbWhat 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 toz v5 fbpg.y39/3: hcc; h 3pn7tglnjgt medium 3 as shown in the diagram. What mt3hccf/bt9ggpl:nz73 gyp5hn v 3.j ;ay be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thatc sllcabxh3, xwq+919 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 best describes the relation between the ind3xxa1cq,9+ blwh sl 9cices of refraction?

  09.34: The diagram bel2- i8 c4 yj/hmam2 urc/xivlg/ow shows the path taken by a monochromatic light ray traveling t8 lhju/ igcr4xv2cam-/m iy/2hrough 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 gl2jz2cixd+ hre5 i oz-ypw1p1c r.uo6 /ass ($n_g$=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 vxwwoqw. 1+1ep w4)trdwu:q(dhr a/(glass at 1.h4w(w xduvr(o1/p +: )wdatqwqwre 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 a pmk*gat/vx*( d iece of glass. Which one of the labeled arrows best indicates the path of the light ray* v (td*kagmx/ after it enters the glass?

  14.44: A ray of monochromahe fto/ mf8k nxl.p)4n13-anltic light enters 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 ok1-3 la 8n4t xem.)h lf/nfpnthe lettered rays shows the path of the light after it exits the glass?