11.24: Two wave pulses tq5/t fd vglz*s-4l v+pk*c2q fravel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interferelv q dgf*t/5fl2+-pz*c 4vs qk. 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 surfaer9e4fbq ,e;eu/ n+6ylyel0x ce of a plastic block. Which pair of statements correctly describes refle y/90;6+e4,yq bul e nxethe phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes strai.6d v0yohi9nl ght downward through the point labeled B in the diagram shown. The ray reaches a flat moy6lh9 nvid0 .irror 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 incidei :;1m*qmt1cb ca0vv tnt on

  05.18: A student hold a hanbik;qdfx e : z,8n52drd 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 she holds the handk:n qd z b2ex;df8,r5i 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 rw5-y)c7voqvegb:im t mk1-o1 ay changes direction when it enters a new material. Which one of the following choices is the term best associated with this pheq1bo )7mctw -evyv-g k 5mi1:onomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in at+f y0s l*1nep.uwh .s transparent material. What is the i0 .*u1s lhnfyw ste+.pndex of refraction of the material?

  98.04: As sound travels from stee0rzc/hgx t. f ajx;3xuf+ x8 w8fqq,j5l into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium.6 1si xmcjlh+ with a different index o16xmhic jl .+sf refraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency trave2cr4 *dl5lm fsls from ailcfrml*2 4 5dsr (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 of the sound as it passes from air to rock?

  14.28: A waterproof speaker p7.dg z g8;.ljhii bw k mxv/95;g*bzp2 xena/placed at the bottom of a swimming pool emits a soun2/.89;m5naj. g hd xkb7wx bpgiei gz;z/p* vld wave that travels toward the surface of the 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 white light strikes a rectangular glass block with an g yj3 .bp/.y*qb6czh zangl yp.zjqh3./zyg cb6b *e 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 toward a point P on 9y it r k/*kcpfvz/2 s)vu39n-h8i bcaa boundary as shown to the right. Which segment best bvnkytfc k/vpa*s ur8i2c9ih9 z-/) 3represents the refracted ray?

  98.17: Which diagram best represents what happ(bby/5 kcl j97(iugsp ens to a ray of light entering air from water? Air is at the top in l5k j7uybis (9pb gc(/all diagrams.

  94.11: The critical angle of a material issj d9wn y-o73d the angle of incidence for which the angle of refraction id9o-w7 ys j3dns:

  95.12: The principle underlying fiber opgq 5z//rzpb)wtics is:

  98.36: The critical angle in a tran 740bc/zbuxqe5 ocw6 sj97*kno.gkxe sparent 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 of refraction of n =mptc n 3gx 92kva1o1.d 1.5 to material Y with an index of refraction of n = 2.0. If the spep12a9ct3ng.k1 od m vxed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between jvyv(-fq1v;-)9z si, 5q kep6ic amyba diamond and a piece of glass by observing the critical angle of the light in 9 cs1vaii;6zv)e5m (fykq -q pbv,jy -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 the p - g9nec ,8j0beg;ul)5ydkts light makes an angle of incideglty8)0-9ke; nbsd g pu ,jce5nce 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 ks5uwuiq7rab )u( 4q5 of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and targesqk) uu4ab (55iwq ru7t. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown tzz h/4gh9 xd:f2e;rh in the92h;xh rztgezd:/ fh 4 accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2ss :hvpfmg5-)k0 omf ; to medium 3 as shown in the diagram. What may be concluded about the three indexes of r)5-fk;f g hpss:m0mvoefraction, n1, n2 and n3?

  97.24: The accompanying diagrp e66d;tdx/,:9sqs kpccrl3fkz 1gq-am shows the path that a light ray takes passing through three transparent materials. The indices of1- x q/r:z ,9;cplefgqtsd pk63c6ksd 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 takem+kz- 6 5jpo ljm7zc0vn by a monochromatic light ray travelingzzm kv-mlc+0 j5 ojp67 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 trcgc:nf; ucg. xwon *)-aveling 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 a rectangular blq quz+6zctjw. v ,9fnje2;ci7ock of glass at an an.6zcjq9 c +;f7i,wejznqvut2gle 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 sic8.rnd-h4 y a piece of glass. Which one of the labeled arrows best indicates the paths8i h-dc .y4rn of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-trianguwlhm*;hj 1e 5dlar 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 mjl;dh1h* w5eglass?