11.24: Two wave pulses travel to the right toward a rigid bou-)cbd vt0wkti74kp c6w d1jc -ndary as shown. After reflec74-0w6tciwk kdvb t)- 1ccdjption 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 passer 8m,/d5j-tekpy fak op w*3enoj.(/ zs through the air and strikes the surface of a plastic block. Which pair jw ek,3e(rpd8m5a.*/ ykoj-nopt z/ fof statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point laiit2:x/bh z t(beled B in the diagram txi(2:b zhi/t 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 light*9x hrv;*/kehhd5zo/qq t qdv)y *f 6m is incident on

  05.18: A student hold a hand mirror to observe the back of her hfz0noz5 h closp.j- ijf*m9e 23 ya/l:ead 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, sf0y-p 2 a/jl*sfjz95mo .3olin:h eczhe will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light +)bhaguh v z96ray changes direction when it enters a new material. Which one of the following choices is the term best associatb9 ) auvghhz6+ed with this phenomenon?

  96.19: Light that has wavelengzcy8r3le )qu,nv c(q /th of 500 nm in air has wavelength 400 nm in a transparent material. What is qy/)u vcr,en8q(l 3c zthe index of refraction of the material?

  98.04: As sound travels from steel into air, botlmk+n z b5z1r8pb+t5 eh its speed and its:

  00.01: As a wave moves from one mediumcu 2axphx/t1u 4 f*r 8+ex tgky /ariz6ih-*n6 to a second medium with a different index of refraction which of theu ipk*nh*+a8xcyxeu/hfg /ti21r4z66x at r- following wave properties would NEVER change?

  05.47: A sound wave gene1 qqdwb ,rnivch7.f,/rated 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 waveli qqfhr ./nw1c,d,7bvength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimz3; (of klns;s51md qaz2ct0 nming pool emits a sound wave that travels toward the surface of the water. In the watnqkc amo;sd01z2;5 ft3 ( znsler, 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 wiuh+s2 hsbl8 yuk)-x zp8uww -,th an angle of incidence p-wb-u+8)sx z ,wks8lh 2yuhu 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/x l+ju 9x-ftw point P on a boundary as shown to the right. Which segment best represents the refracted ray -/xjtw +xulf9?

  98.17: Which diagram best represents what happens to a ray of light enterin,az 8s3ldpgh.9fnu gec h0h-:g air from w.90ef shc:z8u-,dgahh l 3ngpater? Air is at the top in all diagrams.

  94.11: The critical angle of a ma1vk .:ucsy. jkq)z7 klterial is the angle of incidence for which the angle of re kul:v 7 czy.k).j1skqfraction is:

  95.12: The principle under 2ozim0o+ qp w3 flgivw1lo1b 3+loh,7lying fiber optics is:

  98.36: The critical angle in a transparent subst.nw 8mmto m1b,ance 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 inded9b u *l:v7txtx 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 the speed of dlb :tv7t*9 xulight in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass;bh 4cukf a-g.b+qa9 o by observing the critical angle of the light in each material. hbou; .+kf b4qac g9-aGlass 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 light makes an angl(netz *)f8*rnscm l ,be of incidence bmfzr,**(cn n)le8t sequal 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 iq3gg 85qrv+ge ndex of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure fo5 +qgrqg3e 8gvr the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medi0cjzlj0 0w0 fnum 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refra0wj c0jl0 nfz0ction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to mediu 775wd/xjqku9x tay5wjw ,5wlm 2 to medium 3 as shown in the diagram. W ww /5wu 97 k55q,tdwjxlyjxa7hat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyingblmq:n fd6g0; diagram shows 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 the followingg qlm;bnf :0d6 best describes the relation between the indices of refraction?

  09.34: The diagram below shows the p:rd,hqyl4cg;0rnus .g 5g b0m ath taken by a monochromatic light ray traveling through three bc,5 s .rg;:nmhr40 dggu q0lymedia.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 lighp.q,s oh -p3 pzm0x;pbt 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 a rectangular block o+1yn l n/b5f2k z;tqhtf glass at anq hz/; +2n 5ybftktnl1 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 600nm is transmitted from air into a pie+ fv m/maz: 2npt.if0gce of glass. Which one of the labeled arrows b0m ftnvg:f zm +ip2./aest indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triav60,jgpu :si. uofsm2 ngular glass as shown. The glass has an index muss.02i 6j pvoug,:f 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 glass?