11.24: Two wave pulses travel to thene o xy99dq,y8 right toward a rigid boundary as shown. After reflection of the triax, 9o9n8yyd qengular 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 airnk g4j co/05jjd-x7 bh and strikes the surface of a plastic block. Which pair of cj /kdhj-0b5 o74 gnjxstatements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes s1x 6x(q ndh;cftraight downward through the point labeled B in the diagram shown. The r(fq 6 x1d;hnxcay 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 reflectio:lkdor / kuce8i x,y97n occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe tngih3*w+t*g v ms :a hmb1m.s *d.dv,whe 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 h* i 1..b*smndh sm3wwh+dmvvtg :*,agead, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed cn (1 (n rfke ons*fcraf2:q b07:08mxuhq/hqthat a light ray changes direction when it enters a new material. Which one of the following choices is the term best a:bqcnu (1/20r(mef8xh0: sockn* hnfq7q rafssociated with this phenomenon?

  96.19: Light that has wavelength nupotzw39f3l kc-4p 5 of 500 nm in air has wavelength 400 nm in a transparent material. What is the index ozuk-wt lof c39pp3n45 f refraction of the material?

  98.04: As sound travels fromv jsb4u2e0; up00v 2hz8 naojp steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second med5heox 30vdg.ow f(k6 lium with a different index of refraction which of the following wave prope5kgxeo3 0w v6(hldo.f rties would NEVER change?

  05.47: A sound wave generated from a tuning fnb2d-ih9eqd9w 9ja y1ork of single frequency travels from air (with speed of souhi1nj2d we-d 9yqba 99nd 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 c,mss k yqdae9bm),20( /ao tcbottom of a swimming pool emits a sound wave thacoamssmed ),t2ca,y 9k/q(b0 t 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)a05p mwt9bh- :elfqi an angle of i5ft ) a0emql9b:h-w pincidence 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 bound+lrw2hls9e:zc. k-d *nd 1 zwgary as shown to the right. Wh gzz*s9lhkwde.-lc nw:+d12 r ich segment best represents the refracted ray?

  98.17: Which diagram best reprez r lwcno )09nl:77wtqsents what happens to a ray of light entering air from wa)wor:7nl wc9lzn 07tqter? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angq m .gf)6jrjb,le of incidence for which the angj,m6 .rgq)fjble of refraction is:

  95.12: The principle underlyi o-r, 6+tkuvkr7gj+g fn 40iamng fiber optics is:

  98.36: The critical angle in a transparent substanc69 r9v n+jz+iscu2zuue 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 wit ixf 9;crw5om7h 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 speed of light in mawi mxo5;crf79terial X?

  03.15: A jeweler can distinguish between a diamond and a pt; 2 qcmsmrdx6p)q+f,iece of glass by observing tfqqtm d m,rc)s6+ 2xp;he critical angle of 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 materi4z yd cfjo+1uj8(me4w al. When the light makes an angle of incid1mwz(u 4jcdy8+eojf 4 ence 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 vv6woi 21+vbarefraction n. The laser beam emerges from the material and hits a target. See the accompanying fv 1bv6a+2oivw igure 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 oaf7 tpc+h21x+fz u u)medium 3 as shown in the accompanying figure. What is true about the respecti1+2optz+)cxufah 7uf ve indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown in()eeci1v)c1m 3ycemwr zt 6w2 the diagram. What may be concluded about the three indexes of ref3) ic2 c1ew et6wemv1)m(yrzcraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thatb78cymm,2kh bvk4dc nju+ ;qb4zgox:l ak0 0 * a light ray takes passing through three transparent materials. The indices of refraction in m4mau q:7xy km+k00,k gcbdh*v ;b28zlbcojn4aterials 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 path5sr)iiqygkojnl ul, 788d .q sv:0e o* taken by a monochromatic light ray travelingqj8 kloesqi7rui* nv :5s)8 gd0. oly, 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 light traveling in glas6 w74,.mocg 1igpqrjyrc*h*(iw w pj:s ($n_g$=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 ligh *iccf2fr qy5,j,bk6 qa:bj y9t is incident on the surface of a rectangular block of glass at an angle of*9q ycqcf j6,ib5afk2rj :y,b $45^{\circ}$. 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 **xmsdfg)cfdo l v/3;cll4r) x; 6wn winto a piece of glass. Which one of the labele l drnww lxx;s3c/f v4o;m*cg)6d) *lfd arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light e/ere91f 8s rrmnters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is s/s rrrf 8me1e9urrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?