11.24: Two wave pulses travel to the right toward a rigid boundary as sho b2gks7ip2p 5hwn. After reflection of the triangular pulse, the pulses will intibk h5p72pgs 2erfere. 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 and strikes thnqi;e:v7 g4q de surface of a plastic block. Which pair of statements c:v;d7 i neqqg4orrectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downdyjw+jq.4j e ezc4g k7k2m43rward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed a.jq2 je edm 74+gz4r3 4kwckyjt 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 oc 84fxzfxc 8pyp0 ag7(ncurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back uca. f3/brdc z4upul46q* an)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 h4rcu l/3aadq) cbfpuu.*4 6 znead, 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 when it ent2 rgmqp+.hk(bers a new material. Which one of the following choices is2(pghbr+km .q the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a )k.t 5a2.ggmht(,obee vpkz; transparent material. What is the index of refraction of the material?2g,oe a( h.vtk) zbk.t5gmp e;

  98.04: As sound travels from steel into a3czqn3x tpd ( 6nh5,noir, both its speed and its:

  00.01: As a wave moves f/f6o-r v;w p cs 2i49fym3pi79rlpncgrom one medium to a second medium with a different index of refraction which of the following wave properticc9m3gf ;ply/7f s r 6vwnoi9p-2pri 4es would NEVER change?

  05.47: A sound wave generated from a tuning fork of single freque b*x8bv no+4dency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is trueo*dbb8 v+nx4e about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a sw66 6c4vg:d5 ulk qk9t*uj o/yk tfpia,imming pool emits a sound wave that travels toward the surface of the water. In the wate/ k: pk v96co6dat,f6yjiu*5lq u4tk gr, 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 bfl*8m8j( ;eaqyxw z;strikes a rectangular glass block with an angle of incidj ;8emx(;8qf*b y zlawence 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 point P on a boundary as vappbmsh:9et7 b : q bs:sr +71xuc-8rshown to the right. Which segment best represent: xrut8msbbc7p+hq r b9ves1 a::s7p-s the refracted ray?

  98.17: Which diagram b pheuj1)nm4qk t8.oc 3est represents what happens to a ray of light entering air from water? Air is at the top in all diagram kno1jc. mt8pue4h) q3s.

  94.11: The critical angle ufd+jr -rp gb hg-3a2v10zvt8 of a material is the angle of incidence for which the angle of refracv 0t hu32a-b8gp-d 1rjvzgf+ rtion is:

  95.12: The principle underlying fibmy5ky--x ( gnq5ptin,er optics is:

  98.36: The critical angle in a transparent substance surrounded by ai3 l17ozwc2v7,,tcq sy y0yyczr 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 1 gs.vn ykou )og2)0n/)cyvzy +r;ymxi1as3 mmaterial X with an index 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 spy )yk+om) )m0icy./n1srg z;a32nyusov1 xgveed of light in material X?

  03.15: A jeweler can distinguish between a dc*n*ikc, p+aunfi w3 /iamond and a piece of glass by observing the critical angle of the light in eachkfc,p+*n3ii/ w ca*nu 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 cleaq.s9pttp9-wl-u,3f z vmcjs;:s.s-wy f jx 6fr material. When the light makes an angle of incide;. ufv9:sfq3 ls6,-s txz.pjjws-mcy -tfwp9nce 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 rew f::sia4pu;t fraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and 4u:ta ;if:swptarget. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to measi1 lr03d+ 0rcjmh 3hdium 3 as shown in the accl+j0 0 hra dmr3his3c1ompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 toz;wdq8 czg6ap75cv (j medium 2 to medium 3 as shown indgq 8p 6z5(j cwczav;7 the diagram. 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 passtf8- db:sjwp6ing through three transparent materials. The indices of refraction in wf:8j sd 6pbt-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 k7kolfc +)(jplight ray traveling through three media.The symbols 7 flo k)ckpj+($v_1$,$\lambda_1$ , 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 traveling in glass (w;g p -7tawpe0$n_g$=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 suv6; dxko :(evkrface of a rectangular block of glass at anv do6kxekv( :; 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 p-emo:5hgyr7n( g) i gxiece of glass. Which one of the labeled arrows best indicates the path of the g)7-( ri5o hgy:nxmgelight ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as showneqn7zc0l 8vf .. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows thel f0encv.78zq path of the light after it exits the glass?