11.24: Two wave pulses travel to the right towa9vxwg p85 x1z otcx3:h.t 3bxrrd a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the fb.t :gvh 3xorpt1 9x8wz5x3 xcollowing 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 stnzyycd5 f8(rjg j4 -.wrikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave 4y.dfg- 5 zw8jnr( yjcand the transmitted wave?

  12.02: A ray of light passes straight downward through the wrmhj*k ldz.hc-v2;5 point labeled B in the diagram show*rm2hl . jvk5w;-z hdcn. 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 22k-ewtj; qqt.-gceo light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whilekh iyp1: f b3(3x:n;1xyqsxu w 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 the back of her head how far behind the walwnsf:k u:3 (1xxx3b ypqyi1;hl mirror?

  14.25: It is observed that a light ray changes dir3iuccmz3;v bwq tgg t/+v ++1vection when it enters a new material. Which one of the foll+b3t uw3m;qg icgv+cvt v /z+1owing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelengyosl,8 kp7pzkd+ 52xgth 400 nm in a transparent material. What is the index of refraction of the mater72oxgk+,p 5z8d yl spkial?

  98.04: As sound travels from steel intohr76q:c m2tco air, both its speed and its:

  00.01: As a wave moves from one medium tonnzs gu1 dx/q, jf+: aracni5-3df 7gg xg+4j2 a second medium with a different index of refraction which of the follo 2+gaag57d-4n c z,/jqx:nd1i3sfu jfgrn+g xwing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of siokv n +*aq4a*n*kbdr kcm-axyd c9*si++0oh.ngle frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true ad9 +cnvsc0 om+4akn* aoyq* *x.-i+r*kkdbhabout the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker plac 7zx z+zlg33lked at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, tz3xzl lz k+3g7he 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 gla0 3qgr 8d7ezdtss block with an angle oftd83 z7e d0qrg 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 ae (: i+mnqqkbft( n)2v5dmi:b*grb9 is directed toward a point P on a boundary as shown to the right. Wm d+ ibmb (r5*gq):iqtn9:(k2e n vbfahich segment best represents the refracted ray?

  98.17: Which diagram best represents what happens tn8z n zneq-b97o a ray of light entering air from water? Ae q7bnnn8-z z9ir is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which 7r miicqg49uzj zvi 3d6,g7a5 the angle of refracgcz7dz 94i ri u5gmia q36vj7,tion is:

  95.12: The principle fcr3xviv ag2o4+z.s3underlying fiber optics is:

  98.36: The critical ao43: o.c+rmxofy o2x ongle 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 froj34sr28 jph ;x wmunt0,r0rsx m material X with an index of refraction of n = 1.5 to material Y with an index jp8rnj u00 m2 xsrxrh, 4st3;wof refraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can dis;r/cx iy(sdf r 6+qhrh*ct*ed r.;c0u tinguish between a diamond and a piece of glass by observing the critical angle rc (rtsd+r/ycfuh*qxr.0ei ;c* d;6hof the light in 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. d7 i+ z.smw)b,fm(rqsi eu5g3 When the light makes an angle of incidence equal toi37.szs5er ,q m +w( udbmfig) $30.0^{\circ}$, 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 embeddedrupk5d 8hbx(bu6l .q4 in a material 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 target. The value of n is bl8d 4xuhk(pu.b rq56:

  95.31: A beam of light)v 8ph h9o2ppjky(i g- passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is trueph89 ) p-jy pkhi(v2go about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as showfo h.lzxe .,;7.mjzn qn in the diagram. Wm x, he;. nqlj7zf.oz.hat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows tu4o 6624js/agg8 ox 0xzmp ia,e nw1ewhe 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 following best d,gm xo ijw4un6eow 4a0/ x2ga6szp1e8escribes the relation between the indices of refraction?

  09.34: The diagram below shows the y4zbc3i1op 9vsu0 vl wq b-2r2path taken by a monochromatic light ray traveling through thr13bo-0bv w q v4l9uzsy 2rc2piee 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 0(b7reppm qx)fisf2 ) 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 rectangultl n5z13 +jl1t0 fpndj7sfsy-g3te-sar block of glass at an angstgd0z5sn y s71tnp 1f+lfle-3jtj-3le 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 glas4ie6reg(rg/uw6v, gn s. Which one of the labeled arrg6e ,i6(unrvg4re/g wows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular 9 bf85w1 ip4it2eua mgglass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the4pmt fie9uib21a8g 5 w lettered rays shows the path of the light after it exits the glass?