11.24: Two wave pulses travel to the right toward a rioxqcxl5(rd 8l;w hc9,gid boundary as shown. After reflection of the trico l,; 9c8lqxw( d5hrxangular 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 passes through the air ag,jl+ pe9) )xkp-ui ynnd strikes the surface of a plastic block. Which pair of statements correctly describes nk yej)-+ 9xpp,u)ligthe phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight down2wd*3r is4anq ward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an anglend r42q*awi3s $\Theta$ 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 lightz*s:x 5y +jszt is incident on

  05.18: A student hold +zdl4xh 1h;k 5/ahu sba hand 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 hand mirror 1 ft behind her head, sh+x4k/d;z h5hus1bh lae will see the back of her head how far behind the wall mirror?

  14.25: It is observed that kzf k,qu;r6 v 1zfb4r6a light ray changes direction when it enters a new material. Which one of u f6,r4zr ; fkq1v6kbz 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;fyh-ew / jc orn8fe9nm 5*ny* nm in a transparent material. What is the index of refracr*j;cfynf/h- e5n* e m9o8ny wtion of the material?

  98.04: As sound travels from steel into air, both its speed aa lo-ti;5g4 4 w3d.ju w s*jdtsnn64mlnd its:

  00.01: As a wave moves from onj 9;jpjhjs* 7ge medium to a second medium with a different index of refraction which of thj7j*hjsgp9; j e following wave properties would NEVER change?

  05.47: A sound wave generated from ltvp v+3 h(b,sgvtx)02o mea 2a 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 the sound as it passes from aihbsvvt32(o2pme)vlg ,ax 0 + tr to rock?

  14.28: A waterproof speaker placed at z)/cca -x7ujsal6ag w6l 4vf*the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave hasa7a 4xccl/ s6*g)u -wz fvja6l 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 +kj 2khn *bc mby5p-)jkr3n j/an angle of incidence of jmbbcn2k3-*pr jkk/+ )yj5 hn$0^0$. 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 as shown b3+ezqsa)2 ki to the right. Which segment best represents the refracted r2 bqsa+iz3ek)ay?

  98.17: Which diagram best represents what happens .g.wkl fh,z;x to a ray of light entering air from water? Air is at the top in all z.hwk,gf.; lxdiagrams.

  94.11: The critical angle of a he tm .p;ek4a,bl m2q (kxk,)imaterial is the angle of incidence for which the angle of refr e4q(.hxma)klmikp b;,, ket2 action is:

  95.12: The principle undekz,ez6 vgra9em *q+1g97vw v dbfw2l (rlying fiber optics is:

  98.36: The critical angle in ail- sj 1nw0c:o transparent 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 nkuq)9(w1*0 vtdmo scd = 1.5 to material Y with an index of refraction of n = 2.0. If ms 0cq1* v9o)( udtdkwthe speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond andu do.eq7 a0;wr a piece of glass by observing the critical angle of the light in qw0dae7 .rou ;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 into3 ,vye;i vswhfz,4 v4z a clear material. When the light makes an angle of, s34z,i 4vz;vywevhf incidence 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 ijvq jl.,l nwsqy yj(6g /p+n;1ndex of refraction n. The laser beam emerges from the material and hits a target. S, ;.j16(n lj+s vnyqyqlpg/w jee the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 tjq: kntj:wvjhy r5w/n5b+m)p,hs:*so medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, anvp ,qjhwy:kmw n b*) :+ rs5hnj:5st/jd n3)?

  00.14: A beam of light passes from medium 1 to gx-/z s( ,ug dsyzzb+1medium 2 to medium 3 as shown in the diagrag+b szsug-d1z/ ,x( zym. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passinnncu( -zjo/mz 5o4: +m/kuyqy g through threzyc /u/n+-q ( mn45:youzmjoke transparent 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 t u m1vjj;(io;ray traveling through three medo jvmju;ti1;(ia.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 travelin5rwcx; dk67 ku u6phd wekh388g 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 incidentg44 :qq 2)uo;d q).bvd pdd9ogf5pys -xx )slp on the surface of a rectangular block of glass byoqpv 2d:;)5gssu 4xd pgd.qo )-x lq9f4p)d at an 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 1nex0urk a(-gcrk8.uq,.gc4vk eq m 7 a piece of glass. Which one o0qur g-.(v8x71kkcmru.qn4 ga,ecekf the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters tn ;2rtwt.3fpe he 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 fne.2tpwt3 ; rit exits the glass?