11.24: Two wave pulses travel to the right toward a rigid boundary as sha9 8j:hrd yr1pay1/8dwb8 dxdown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the sud88 dh1 abrw1y:9xdd8j/ypar perposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the sura/njkdbp:.*pj8,iv x c0amy. 3yas:w face of a plastic block. Which pair of statements correctly descrid :,kcys* ..a3wvpy8/j0na xba:mp j ibes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downhezy,39y7*c sw k39p+iukyje ward through the point labeled B in the diagz, 93sje u*wycky yi9+7hp3k eram 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 o ssot/d(+lq4u6jos m 0ccurs whenever light is incident on

  05.18: A student hold a hand mirror to obserwy9 7eghy/u-5 kml-9r.fe8 orczw o1vve the back of her head while standing in front of and looking into a wall mirror. If sghmworve5. fzu- y19e8-cy7k9o lrw/he 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 entyw:-0 yehg )pnuzsvlf4a ux*vk ((:2 fers a new material. Which one of the following *wk4 x-)ua(z(nefyu0:fy:gh2 v l psvchoices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nmo; 7cuo-qw)u0 ikcgxz,+vg.gmz9b 4c in a transparent material. k+o70q4xgiz;b)-c vc ,9co. zgwmg uu What is the index of refraction of the material?

  98.04: As sound travels from steel into air,dy.9 nu1/ qefr both its speed and its:

  00.01: As a wave moves from one m)* qt.y)jha4zsix 46 loosqg 6;)xmpeedium to a second medium with a different index of refraction which of the following wave properties would NEVER chs;tj y4o x6*l64s zeqp).xiag)mo) h qange?

  05.47: A sound wave generated from a tuning fle 3:n2y2jq(yran aj3ork of single frequency travels from air (with speed of sound 340 m a2:2(jyn r3jn3 qaley/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 nt7mc(x. v .zcof a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the..cnv cz (7txm 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 rectangular glas h6l9ev1p61/ r-udiu euls4;j oqckq1s block with an angle si/k 1hdle;6 uoj1qp- 9e61ru4q cul vof 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 w it+6pt (v+ziis directed toward a point P on a boundary as shown to the r+ t 6ipivt+zw(ight. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a r 1nk*2hxy7tm 5s vxxm6ay of light entering air from water? Air is at the top in all di12vy67 tmx *h nxmk5xsagrams.

  94.11: The critical angle of a material is the angle of incidence for which l 7dokom80y* 6q*ub/ oawxk*jthe angle of refractionkl m8*o/67ay ux *jkobd o0*qw is:

  95.12: The principle underlying fibe y7 xpwmi8wpmr2+ 7jqx-g-dx; r optics is:

  98.36: The critical angle in a transparent substance surrounded by *0f w17anr9p y- 56 sgsbvrorvair 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 n7v3 bfpfkp z7kvji-*xo )y)r5 8g 8ltwith an index of refraction of 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 7vo y7*pxn jltrk8)ifg )-vp z 3k5f8bthe speed of light in material X?

  03.15: A jeweler can distinguish between a diamond ad; gy-uqoqf-) nd a piece of glass by observing the critical angle of the light in each material. Glass with an index of fgqdqou;) y- -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 in4 ds-3bu* zqdmto a clear material. When the light makes an angle of incidence equalzu-d3d*b4qs m 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 matermcopjxt .;z *3.yxg6-ay 1unl ial of index of refraction n. The laser beam emerges from the material and hits a target. See the accomp6y1;c.lpa*o3x . ym gxzu-jntanying 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 sho d.o 1tndf ododqz1j.ad,8t 7)6hjr)qwn in the accompanying figure. What is true abor6njo d. f, 1) dq8t.1zjoodqd7d) ahtut the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown inj/g px*1ibi )r the diagram. What may be concluded about the thrijpr /*xi )b1gee indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passin+ 6 mtfa24gspxg through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of4 msg62+ptxa f the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the 3s ktp4ojcc1.b fctv)p.galt:fz051path taken by a monochromatic light ray traveling thpzl3 5f1jtato 1:f.ccc)0p.k4 vg tbsrough 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 glas02 h(:c/pb(u hdnyi whs ($n_g$=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 t amdzo5(xl*uwf+1u5ch3o :n of glass ato3xu5wa*tzn:uo l15f +d cm(h 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 60 -g b3srna6tl:. )tbab0nm is transmitted from air into a piece of glass. Which one of the lbbtnt a 36g-b.r:sla) abeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown.x8-xn)3nd 2vdw. mkx f The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the m vwn)8 xd3xkxf-2.dn lettered rays shows the path of the light after it exits the glass?