11.24: Two wave pulses travel to the right toward a rigid bound t(jk)2* c,z+zcqcigqary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the(*ijz +,2 tckzccg)qq superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through.a v()vrsqqn1,cmr,a0p fg5e the air and strikes the surface of a plastic block. Which pair of statements cor0r5,)a.msfaq g q,p e1v nvc(rrectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B -;mpl ogja;4k in the diagram shown. The ray reaches; jlk4;gma-op 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 reflectionkn pq5s6- 3i w, .oetn*uv9ror occurs whenever light is incident on

  05.18: A student hold a(fb;+l bd(un5 ty/8w,vk3 fj;tytlom 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, oyb /;twj tkynt3f ;l8uvd + b,(5f(lmshe will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction whe vqkogh9q 627wn it enters a new material. Which one of the following choices is the term best associate g6qo kqv9w72hd with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air hagg(sukuk; l9- .lq1g6lv zch(s wavelength 400 nm in a transparent material. What is the index of refraction of the materia ( gg1uluhc -q lv;lk9.sg(z6kl?

  98.04: As sound travels from steel into air dg5uo* o4.54gstv, h pg pfqv;vrcc/8(ews +t, both its speed and its:

  00.01: As a wave moves from one medium to a second medium hq9kz-qz;. 9,bc.q zfn dr i:bz7qz/ mwith a different index of refraction which of the ffdz7zq c. q;bkh zzz qb.n:,iq9m 9/-rollowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of sing)8 x/gcgg;s/9 p 2kocpu xjs luig;1m-le frequency travels from air i)ggcjk xg; x19p8s-goum2csu// ;lp (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 placed at the bkrw3*j4 n1p-p mug2maottom of a swimming pool emits a sound wave that travels toward par g2p km*34un1mjw- 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 1fr) lvr k, ls;qjr;0wglass block with an angle of incidence of k;) f0lw r,sjv1q lrr; $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light i3k8qwyp -ycu,m w2hw5 s directed toward a point P on a boundary as shown to the right. Which segment best represents 2y wu5pkwwh-q, 8mc3 ythe refracted ray?

  98.17: Which diagram bevuetmo9o:1y;tc pf,m )nb7 js*oy 5/mst represents what happens to a ray of light entering air from water? Air is at the top in all diagt/e7cy ynom:,f; mo* 19oj)svbut5pmrams.

  94.11: The critical angle of a material ix ,swin 72ksrupwu:77 grh*;a s the angle of incidence for which the anglegw7r whi 7;: skp*n2r sxuau7, of refraction is:

  95.12: The principle underl:7l;bh o6o cc0nr)9c zuhc1gnying fiber optics is:

  98.36: The critical a ; dp64/xk 0txbajv lnr7;e9etngle in a 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 indn l zx;uq*xqh0-5:mwjw(1ut iex 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 thtm xh0q5 iu1zlwj(u:n q-xw;*e speed of light in material X?

  03.15: A jeweler can distinguish between a dw8jav+ sdtflk mbiy r13g-i 8,)zr*5diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.5 8t5rwilk8j z r3+vsbi dgay1-,)df*m2 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 th -b4tr ht+z 3faa*jnu0e light makes an angle of inci- tfahajtr*4 nub +z30dence 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 refrac8*iv4 ygf(u lxb+r9c p3ddm-ftion n. The laser beam emerges from the material and hits a target. See the accompanyifdxfdpim4*(v3yc l 8-rb u9g+ng 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 to medium 2 to kf0 x osf2(, 2+t+utg3tzgshtmedium 3 as shown in the accompanying figure. What is true about the rt tkf0u3,z s(tsgogh+ x+2ft2espective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to 3kx(sgtth z;y pz1-q ivb1 -0zmedium 3 as shown in the diagram. What may be concluded about the three indexesz(zy; hpq ktt x3 zsg-b10v1-i of refraction, n1, n2 and n3?

  97.24: The accompanying diagram kf2g 77yxh7cmshows 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, reh2fg 7ykm7x c7spectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path take+.g /(rd)o k:m fqik+jpghtc7n by a monochromatic light ray traveling through th7:+f. dhrg(/kcqmkp jo+igt )ree 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 lighj395szp2 je+ba vgvey r6q -*wt 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 surfh*onki 1hys8) ace of a rectangular block of glass an8 kyh )1ihs*ot 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 a piece of g1t0go u /1hjbclass. Which one of the labeled arrows best indicates the path of the light ray after it entersb/ o1c1jtghu0 the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown.axlr)hegy n 5n6i30e, The glass has an index of i6hee0ay)n3r5 n,xgl 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?