11.24: Two wave pulses travel to the right toward a rigid boundary asr/b *p d.mnvj6 shown. After reflection of the triangular pulse, the pulses will.*6vn/m djpbr 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 air and strikes the surface of tkcib+o0l 9jqz.s52b a plastic block. Which pair of statements correct9iq+ct0so.b lb2 kzj 5ly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through thgaxa7u5 7vks ),xhy dy0pxn05e point labeled B in the diagram shown. The rag xka0x0h p5nsv5a7yux )d7,yy 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 reflectia:y6po sx-iukn7 +s v 01hark;on occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while sta t6ms)5n63e tbuu) bs2,ikocznding in front of and looking into a wall mb362 ms ,i6eu)uo5ztbktscn ) irror. 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 e r+9vf58tfoj changes direction when it enters a new material. Which one of feojr9 fvt8 +5 the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a tra,f of 3nb,suk48lcg n1nsparent 8usco3nb ,nk1 4flg,f material. What is the index of refraction of the material?

  98.04: As sound travels fdrzw 86h11e7kvtb cl:rom steel into air, both its speed and its:

  00.01: As a wave moves from o qz.i/yfj5y+ ,hsff;82ygn vwhz l(v; ne medium to a second medium with a different index of refraction which ohvyn2ffvj/f8;sq.h( ;,yzl wig 5 zy+f the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frx94 5iq9 lwrdzequency travels from air (with speed of sound 340 m/s) into rock (with s59w4iq dz r9xlpeed 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 pool emits a soun3 (n4skstr6 msd wave that travels toward the surface of the water. In the water, the sound wave has 634t(rssk smna 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 glass b;y/(pilo 1ey nlock with an angle of incideny yn/;1 li(epoce 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 toward a point P on a boun;fgb 5uu)8j pzdary as shown to the right. Whicub;8 5)fupg jzh segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ra ;5k qc1zinpd8qs (t1qy of light entering air from wate1q cit;q1 dnqpk 8sz(5r? Air is at the top in all diagrams.

  94.11: The critical kr7l96f7jjr9g. m bmoangle of a material is the angle of incidence for which the angle of refractij6m l7f.99rkjbomg r7on is:

  95.12: The principle underlying vycye .,5.lct fiber optics is:

  98.36: The critical angle in a transparent substance surroundedkr.v 5eaxc/idf ++zk, 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 47it*/esjf owfs yr+6 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 inj7ywtf+* ife /o4 srs6 material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of gl g;fad j *joe7nwj.hls-0fg/ l7e1bs (ass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical f0.e*sjg7 (lf7a1-wlsb/godj;j ehn 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 mater0no jse*ux40i ial. When the light makes an angle of incidenc*jseoni u400xe 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 ed4hgk.bk9n; in a material of index of refraction n. The laser beam emerges from the materialn94; khk ged.b 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 ligh d8+(j9 aactkpt passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is tr+(dp9aat8cj kue about 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 3u.3jxah3 fby-ol r g1shown in the diagram. What may be conclu1j3go3by3. l-ufrhax ded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram qs :k 6hfbc) r7xkb1 2uf3wt1vshows the path that 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 thesu 6c:1 v3fb1qwrxb)thk 72kf following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monocxa bstkiy9i22)b:kn a: 8v2gcvg:o 7fhromatic light ray travek:v:a:9v2kb8ayb ctgsx gio i)f72n2ling through 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 inu cur h6t)av bj()+t/m 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 6bv/v-m0x;+fc b yqzzn ay 87a*ort5 fblock of glass at tzm/c56x fn 0ar;yyqv -7 +z 8f*obavban 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 600n jsqbwt5ap w;r0z-:r7u4 ud5qm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the gr:tquz0j bd;r sp-54qw57waulass?

  14.44: A ray of monochromatic light enters the right-triangular glass aic *x a3 dz4f34q/wgnrk,i t;qs shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one oifi;a/qtqcx gzn,*r kw4 34 3df the lettered rays shows the path of the light after it exits the glass?