11.24: Two wave pulses travel to the right tvve+6eu7nh qe q7n(wlq*b ) e7oward a 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 individual pulses coinneq q7 *ebe(v)hqn u+we7 v7l6cide?

  08.30: A light beam passes through the air6n,f wz3-sjj b 4yf*b bk.ejz5 and strikes the surface of a plastic block. Which pair of statements correctly dess-kf5jw,n bzj6b3f*yzj eb. 4cribes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downwax4k zsyu3vyz-a),w,x rd through the point labeled B in the diagrawk4zy xz ,x3y)s u-,avm 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 occurs whenever ligt9u h+skc u(qa6p2hr+ht is incident on

  05.18: A student hold a hand mirror to observe the back of /v rq/q+h(lli 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 hand mirror 1 ft behind her head, she will see l+( /lqrvhi q/the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction whbk)d .be2.loo xg+gx n mh).a5en it enters a new material. Which one of the following choices is the term best associated .oohx+a2.gm kn)le b.g5) dbxwith this phenomenon?

  96.19: Light that has wavelength of 500 nm in ajw 6bz2gu 1c/1 qt.6 8nkwln*.eub gzq2tach4ir has wavelength 400 nm in a transparent material. What is the index of refraction of the materiawjl2g11wkzuqcb b he68ugnq .t*t./az 6n2 c 4l?

  98.04: As sound travels from steel into ao5 tx2 xcc4icyp xl)9)ir, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with n. gre u/tko25c61zkj a different index of refraction which of the following wave properties wokg/en oz 521r6c. uktjuld NEVER change?

  05.47: A sound wave gene1 n 0oz 0na3qkne:oz2i pu(i1j1hg;mkrated 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 and frequency of tho1u1 nkze2o30 iz khnn;j0: q 1a(gpmie sound as it passes from air to rock?

  14.28: A waterproof speaker plac ;wwitrz 7e5;ded at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sounr ww7 t;5zei;dd 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 ovl5d2d6n6 x b,s:gyy:xks;+k fjj k1k f white light strikes a rectangular glass block with an angle of ix 6flxbdy6yjdk k+ns:s 251kv;g: ,kjncidence 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 boundary a05l5gf0 kj d9 hsnsw aww:+wl3s shown to the right. Whl wj h5nskw w05g0l:wf a3sd9+ich segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a r iq q,5k)4c,:l70)mv iq ga/bu 79ccffxuigukay of light entering air from water? Air is at thm g 4ibf:iaci)vxqf)uq /,ku7l 0c7 cgu,kq59 e top in all diagrams.

  94.11: The critical angle ofp*smpfy2 5 (yw)fmo+e a material is the angle of incidence for which the angle sfom()p*p ywyf+2me5 of refraction is:

  95.12: The principle underlying fiber );wxmod; ,hxh optics is:

  98.36: The critical angle in a transparent substance pnmx6 7lx ky4u+ r/7czsurrounded 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 27ze bvzih)e,a0e7x bj (al 6mmaterial X with 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 m eez,h)z axa7j2vb7( blm 0ie6aterial 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 gla(+qnbzdk0( ;h t 43gwterns o-ss by observing the critical angle of the light in each material. Glass with an index of refraction ( nd;tkwe szn(ghr-0b+o34qt 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 lightd l6pnfm .s tc,(a,gjmml5g7e8tbt ,6 makes an angle of incidencnmpt6 dgge st6blm jm87 (cfl.,, 5at,e 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 refracww0i1 8mg//ukh hqd 6ition n. The laser beam emergiq h1wg8h/dm /i06kwues 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 passew/xlq(hoy8yn eqf8f5hj22s *s from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respe ywjxso*2 8q eq(hfy/ 8fn25lhctive indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes fw f1vc 9bk prvy:,d8)krom medium 1 to medium 2 to medium 3 as shown in the k18f),dcp vkwyr9v: bdiagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thb8q;y-3j t-xlzkx+l)wlbs9 x at a light ray takes passing through three transparent materials. The indices of refraction -b3w szt;ly-q9 8l+x) xkjxblin 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 ;5-x sdat5q:kl3aqj je7 g( ytmonochromatic light ray traveling through three media.The sq;(gk75ay5ljjtaq t -xs d3e :ymbols $v_1$,$\lambda_1$ , 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 gha1(p8t.4 o5eq,zafj h gph2 nlass ($n_g$=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 surflr y/p,:;;r*6jd zb 4kcwur3houlg 6jz :tj t.ace of a rectangular block of glass at an angztylt*bp./uj : h u wgz;k6j r;oj 4ldr3,:c6rle 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 fwu9r, v0nad01st sf/a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters tawur0s9 /fnv 1s,dt f0he glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as show2fiuvovpn4 -s lf6 /19tz.iwr n. The glass has an index or .64 u/9zvponivsff-w12tlif 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 glass?