11.24: Two wave pulses travel to the right toward a09cgkfw,g:*tiw /dcko uo*1 s 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 individualwkkt0 : *s /d1cogcigwfo9 *u, pulses coincide?

  08.30: A light beam passes through 6m5op1 a8 2nvjiw(b qnthe air and strikes the surface of a plastic block. Wa25jv pqb 81nmni(o6which 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 through1v4gn,32j(/ kgs,n z fgkfht b the point labeled B in the diagram shown. T fg hjzb,,g( /n k34sn1ktfgv2he 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 lifm7 n(/m(qqvhk hy r:fy(0)orght is incident on

  05.18: A student hold a hand mirror t ;cvyqamxuk2q5l,g :hg+/c ;fo observe the back of her head while standi25v ;gfuql+qx:,/ my ;chakcgng 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 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 new mnzz.1xji.(usv cb b 0s-5ogt5aterial. Which one of the following choices i5 jx1vu-5 .nssti cg(.zo0 bbzs the term best associated with this phenomenon?

  96.19: Light that has waveq wg24s0iw+* bkshy l1length of 500 nm in air has wavelength 400 nm in a transparent material +i2ss g ly4*q1hbw0wk. What is the index of refraction of the material?

  98.04: As sound travels from steel into+ tj(lc/o/4rgof g/qa air, both its speed and its:

  00.01: As a wave movex5 fz,,.oinuuklc 3b4 s from one medium to a second medium with a different index of refraction which of the following wave properties would.ciu 4bl,u n zkf,x3o5 NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency ei jnhxv5dous0d w*/3xn+m*/ travels from air (with speed of sound /5 sm +/joddn3xvnuwi*hex0* 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 t;p*yzg ,zvwz-he bottom of a swimming pool emits a sound wave that travels toward the surface of the ,pygwzv;z-*z 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 whitcwjjk+ ep/()r6 sxzvlv.1:a xu bs2g3e light strikes a rectangular glass block with an angle opbja l wx: 3ujs. sx)vz2v(/r+e1g6kcf 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 directedc(n() 0 ybjdbg toward a point P on a boundary as shown to the ribc)((b n jdyg0ght. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray*q 7 sv*oemietgg7 q(2 of light entering air from water? Air is at the top eots*7gi vg(meq*27q in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which th.a -y p)pq ,wzjatae8*k+bvg6*.mtvx e angle o,6**kx p a amg8p.ewttbj-+zvyq v a.)f refraction is:

  95.12: The principle unde)+acbab)epw:w cyfe+prc3s2e 6 b 5g .rlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounp zem4mqfr3dm9)7 fe4 fvw wwue,)05vded 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 of refraction ofm* t-ssyx0 x8f 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 material t8y*0s sfx-mxX?

  03.15: A jeweler can distinguish between a diamond and a piece of glass)baivb+u,ky8 by observing thev +b, )8buyiak 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 ths 6c( d97 co(p8vw6xxwo5m sthe light makes an angle of inccv665hx98mw 7xc(w o d stops(idence 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 lasbe(b*4 4b7dopj y+wj6 o(cpz ier is embedded in a material of index of refraction n. The laser beam emep+o7wyp6o4djjb4 cebi (z *(brges 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 me,iw7 h:qxw5 hjdium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of reh,iw:57 jhqw xfraction (n1, n2, and n3)?

  00.14: A beam of light passes from me 0 il- bspv:;uc0 qwztp2y30d*nry3 eydium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and w pbnli*y3y : upscr203t;y 0ev 0zq-dn3?

  97.24: The accompanying diagram showsdmo ul t;.g*y: the path that a light ray takes passing through u;g*otlm :d.ythree 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 indices of refraction?

  09.34: The diagram below shows the path taken by a monochromae2poc*5 z )y kypgxd9)+ vv9hgtic light ray traveling through three kozp*9 +9 gyvyve)2hx)dgc p5 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 tragel :xayrc*32veling 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 incide *xv m(3zgi yd*ssenpfg;u( +7nt on the surface of a rectangular block of glasf(sd7 igx;3u (venszgm+**p ys at 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 f2e(pd+h4/mpgc cjnzq 8dq,p -e :+/e jezsn7crom air into a piece of glass. Which one of the labeled arrows best indicates the path of the light rayn4 qmsdpn/( ,8e ze7+z2qphjg- /e+:jdcce cp after it enters the glass?

  14.44: A ray of monoch2y:jwz5rhe eh,b.6d rromatic 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 the lettered rays shows the path of the light after it exits teyh dbr,wz2hj.e 5 r6:he glass?