11.24: Two wave pulses travel to the right toward a rigid 0 r.ue o* zqwv):ohyh.boundary as shown. Aft h:0wq ovz..)uoyeh *rer 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 individual pulses coincide?

  08.30: A light beam p mplo1bo14l4xasses through the air and strikes the surface of a plastic block. Which pair of statements correcxl1m1oo4 l4b ptly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes 3h,ng4jy6 * n rly)lxhstraight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an angl*)l rhyn g 4xlnjy63h,e $\Theta$ 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 reflmw;9vg3 mn-f rr kzt37ection occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head w: z1 ;dc6x*s9;flycbi2 cfcsghile 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 behindcfl;yd:9 bgssc6f2 *1czxci; 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 change)6 jhwh k-+nois direction when it enters a new material. Which one of the following choices is the ji6kwo+hn -h) term best associated with this phenomenon?

  96.19: Light that has s nx 4xjeon/8s.3o c0m cwjy86wavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the e4s nxyjn8/.j wc68mcsx3o0o index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed a l *9wujtffqd uq4hq0r 8g)r6(nd its:

  00.01: As a wave moves from one medium to a second medium with a difffp; a ubb.+qf/o 10l.xjpag:m 1gxo(o erent index of refraction which of j .:f+x( 1ap0u.xbqbo/g g1mpo oal ;fthe following wave properties would NEVER change?

  05.47: A sound wave yrrgqzsu e *v6*kt6- o.p5zj-generated from a tuning fork of single frequency 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 an65yp6*qk* ru -.evtr zz-ojsgd frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimmingl)-8 mneiq:*yqx w3d o pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave h*e dqln):yix-8w oq3mas 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 rectangulara sqfad1+m 8:a68rq sm glass block with an angle of incidence of da mq+s8: fqm6 r1aa8s $0^0$. 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 bouzzmz (33uij9h / 7wmnandary as shown to the right. Which segment mzm9za( zujw/nih733 best represents the refracted ray?

  98.17: Which diagram best represents what happens to an b,6axk+:e urw*wcup wu3,a. ray of light entering air from water? Air is at the toeu3n+*.x6,a,:kuwb wprc uw a p in all diagrams.

  94.11: The critical angle of a material is the angle of incidenc,i -sd5xqh*h sg nl;3;o.wylae for which the angle of refraction .gh;a 5lnldqh x;s3,w*soi-y is:

  95.12: The principle underlying fiber ky6y6t4 i3(asc 4imgs optics is:

  98.36: The critical angle in a transparent substancuw6m.1j .wp hvq.si 5je 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 of refraction of n = 1.5 3v)jflo w,,vxkcqtzk **e28 j 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 ma, w kl8*jq)*zkxteovf23, jc vterial X?

  03.15: A jeweler can distinguish 85y zjhwg)gn *)zj6y;9rk*afu i1htl between a diamond and a piece of glass by observing the critical angle of the light in eag*ajlz )jg9zih1 rw8nyh*) ykft; u65ch 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 i6aa l1*um2:kdj2/u/ mbdcp qy9 r-bmjnto a clear material. When the light makes an angle of i*cb:j/2ur2py9/-d m d6qla1u bjam mkncidence 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 index of refrac1 ium ) qs:du-f86k(kjarnw+btion n. The laser beam emerges from the material and hits a target. See the accompanying figure wfs:k irk 8jn+b 6a-mqu(1d )ufor the position parameters of the laser and target. The value of n is:

  95.31: A beam of light tv; ; x2pypj/fpasses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraj ppf;v;/t2x yction (n1, n2, and n3)?

  00.14: A beam of light passes fromk9y b;o 2tl pko2/tck( medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction9yk2 tl2 bto ock(p;/k, n1, n2 and n3?

  97.24: The accompanying diagram shows the path tha::a(m9dnlb43iiq zd o t a light ray takes passing through three transpare9:dnz 3mo b(: i4idlqant 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 monochromatic light ue(poi;syu:) qrvz86 o wxu3d.5) n 3zhtkh8yray traveling through thrn v)eu)i w 86q zrx3ydus.u p8o (z;t3:hokhy5ee 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 ligr t3bd jp8/q9bj)gyt3ht traveling 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 incident on the surface of ahjvrmqz2(gog ,zr4y l;.3 s3(d cl 3mk rectangular block of glass at an angle o dcr(m; gl3m jz kq 2sg(.vry43,ho3zlf $45^{\circ}$. 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 transm7d;/uhq oswmo8w qr s8md26u1itted from air into a piece of glass. Which one of the labelem8/o16 hr2dq8d su wso ;7mqwud arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters t*)*4e rrz bpgho00hg bhe 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 the gla0oz*4prh b*r0 g)bhge ss?