11.24: Two wave pulses travel to tdwsv h(w7 9p :yhy8ox.he right toward a rigid boundary as shown. After reflection of the triangular pulse, thhxdh y(8: vp7sow.9ywe 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 aif.eiv v/ hcvmcp3/7m/r and strikes the surface of a plastic block. Which pair vi h.efc7c m/vm /pv/3of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pbdq-j9j 6. ,ukcvjlw . z/aip2asses straight downward through the point labeled B in the diagram qcjj.jau,l29z .pbvwk-/ i 6dshown. 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 is incident(kbw, .r;joy t on

  05.18: A student hold a hand mirror to obayzi13*:( gn ah imbx :p6 b7tpgq5c/eserve the back of her head while standing in front of an5aixgaizq 6m/1pg7p:e*bh c( n tyb:3 d 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 wall mirror?

  14.25: It is observed that a light ray changes direction impqvcq1.sh9z )j 9 y .;99leuoba(p :v+zagnwhen it enters a new material. Which one of the following choices is the termgm yp99n;b h+(9lzsip)jqq e . uv91c. aova:z best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in a2ft :i5ic:cc9 p68who3wkvd cir has wavelength 400 nm in a transparent material. What is the index of refractiontf o c6c2 w5wv8k p3i::chdi9c of the material?

  98.04: As sound travels from steel into air, both its speed-0k+-t0j 9duw wli iheht;9u jth* pt- and its:

  00.01: As a wave moves from one medium to a second whg 7dgkb ,:(dmedium with a different index ofd 7k:w, (bghgd refraction which of the following wave properties would NEVER change?

  05.47: A sound wave ge teccp;0p q:/ fx2e /wrdg)-cgdow* o4v3cd.j nerated 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 theodgwtp*fcp/4xv cgecq : ;c3 0/2d ejd)-r.wo sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a svu)hd.yd m*r2c4e.; *lr7 d0bvldd fsound wave that r d)y0v .vllum7rdhcf*d*b. sd24; de travels toward 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 glass block with ana-+j:bp uvehkw 2(i/t angle /u( b+p k it:ew2vjh-aof 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 is directed toward rsu)z 6r -9nrya point P on a boundary as shown to the right. Which segmen)9- yruzrsnr6 t best represents the refracted ray?

  98.17: Which diagram best represents wzkpe;h30+j yq0 8kruzhat happens to a ray of light entering air from water? Air is a zur0jk+830eh;z qy pkt the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidq5cqbv txa(4* ence for which the angle of refra*xtq5ab4q vc( ction is:

  95.12: The principle underlying 0z+ levsmvx5iz:kgk/ oyyi+ 9: q,gj2fiber optics is:

  98.36: The critical angle in a transparent substance surrzh/0+ yppl3r pounded 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 frozy6;f(wf4 o )t6vdwukm material X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the spd(v ;)fok w46uzyfwt6eed 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 and a piece of glass by0*4pg4g eku jq observing the critical angle of the light in each material. Glass with aneq*44 jk g0pug 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 o9 +/kont3a hfinto a clear material. When the light makes an angle of incidenceo3tk +a9/nf ho 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 lad) va+ ny ch::;r wpecy+vqm56ser is embedded 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 targe5rwy6e; d)mp vna:yc+:vq+c ht. The value of n is:

  95.31: A beam of light passes from medi/oin z7u( m k26sx+wwvum 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of (2m67 onx ws+zu k/wivrefraction (n1, n2, and n3)?

  00.14: A beam of light passes from mediuaku/+ adj*tud.0a 3ow m 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraajw +0du.aokd a*tu3/ ction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a ligagn:rmb m 8wqz79t29w ht ray takes passing through three transparentg29q:w8 mnw7 rz mat9b 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 8x0 avoux1oy32afe 6f path taken by a monochromatic light ray travelin 2uf6v3o yexaa108 xofg through three 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 lighcijecqtu ; ( ;7:g5fxvrg,e7ht 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 rect)nq mj6ay,d09l 9gg p5x. ogxxangular block of glass at an angle.gd9x g) mjgn a5 69l,xo0qpxy 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 600npl rfbnf43.4jz8x;yw gn3j56xt; sx s m is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of .z;gr4xsntln sf j85j33wbf ;64x xpythe light ray after it enters the glass?

  14.44: A ray of monochromatic light mb2h6zm)d lh2:aec9r enters the 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 shoc9ahz h2redlm)m6:2 b ws the path of the light after it exits the glass?