11.24: Two wave pulses travel to the ri x5 rr 7bn(ewj6ejd*b 43pmzv;ght toward a rigid boundary as shown. After reflection of the triangu4vmdxejjrrnz *(;ebw57 p b36lar 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 air and strikes the surface of nuk p(v.us7( ja plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and . 7jv(kspnu u(the transmitted wave?

  12.02: A ray of light passes straight downward through the point ic 9ywj/p0hz hx8w.4olabeled B in the diagram shown. The ray reaches a flat mirror placed c/9pji z4oh0ww.yh8 xat 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 is vwx0db.k8 f8ncident on

  05.18: A student hold a hand mirror to observe the back of her head whi j6 ew;v1szv9lle 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 9 e1w jzv6ls;vhead, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray change u; py;tg4t e6li1)lhzs direction when it enters a new material. Which one of the followin 1;;te)l yi gptlu4z6hg choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 0b :vw1 l9z0 /bkrrqmy500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of thebr90 v k:by1/0zrlw mq material?

  98.04: As sound travels from steel into air, both its speed and lc:/ i,p afjc(vq3(gqits:

  00.01: As a wave moves from one medium to a second medium with a different in2prat wt +vl o+:2g7jhdex of refraction whijl2a+ h27:gpwt +tovr ch of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequ t gv7 atexfs(zr647i,ency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement 67giz(sarx 7tv,ef4 tis true 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 swimming pool emits a sqo ss-0k(sb6oound wave that travels toward the surface of the water. In the water, the sound wavsq0 bo-so6k (se 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 lights qaz.1.art (f4ql8/lr p y0lr strikes a rectangular glass block with an angle18r rysalt.0f(lq/azr.4q l p of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lighte 0wnu.q9e6lpd w6t1 q is directed toward a point P on a boundary as shown to the ri pnq61uwlw qe e09t6.dght. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of ligy nz -.yjdu q5,-h tk0wcqaq:4ht entering air from water? Air is aaj 4:zt. qh dcuq-5w, -yy0qknt the top in all diagrams.

  94.11: The critical angle of a material is the angle of i3wy09v7ybds*kc:1 g4lyc q tincidence for which the angle of refractiow cyq 30vy9tgls4:kc71*iyb dn is:

  95.12: The principle underlying fiber optics is:ew1gp.9yj+h 3 ) ukj;m;xlgjc

  98.36: The critical angle in a transparent sub)cong,7 jf tv9stance 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 Xol0 pddp:jmy72svk) t8nq/o f7dov29 with an index of refraction of n = 1.5 to material Y with an index oy09 dk /v7ooo p :qmtvl)d7j p2n8dfs2f 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 distinguish between a diamljzc2dvzga6tg0oyn*0b y3z+ 5+ gy y :jy5uj:ond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical tj2g:o 5+:3bz*dljyy yvn j605gg z0c+ yyz auangle 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 ma e psn/jztw3+xf6h)(uterial. When the light makes an angle of in+xzewhtp 3) (fsju 6n/cidence 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 au86k j+,ffzj wn fncckm0(10 is embedded in a material of index of refraction n. The laser beam emerges from the material and hits ac+ fn0knuz8k,fa60 fj1cmj (w target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from mediumxlxtl5*xt80d(d fkx:5 b 7n, wvda-ax 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices od* x0 l5 :a, nxfdkdxtl 7wx85avt(-xbf refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 tgqq5xw f3btuijlb foq9z ;ji51. 7d:0o medium 2 to medium 3 as shown in the diagram. What may be concluded about the three fi0q3tbj5g: lf9b.uq i7d 5w o1x;zqjindexes of refraction, n1, n2 and n3?

  97.24: The accompanying diapb33q frqzw3//fq )ols x62y j loj9a2gram shows 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, respectively. Which of the following best describes the relation between the indices of re2fz qqxa6/32 bfj 3lryo q)w3 /jspl9ofraction?

  09.34: The diagram below shows the path taken by altw3m)lb-45 73 grt)otgu.bd r4nj cf monochromatic light ray traveling through thre gujm-gftt tdo7c4r.bw) 3l4 5r3n)lbe 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 glass (ch y6 ;. jkimumosj525$n_g$=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 inci4vexx bn: 2n9fdent on the surface of a rectangular block of glass at an n4fx e2nv9 b:xangle 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 wavelengthwfuw 4 t rt;36nft rt;b;3-iwz vx-0wn 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light3; ww 4nfw;fwix3v-0 nt;zrurtt6t -b ray after it enters the glass?

  14.44: A ray of monochromat4*f 0vuyooz( mazkk ;)ic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which onevkok0)oz(m;zy af*4 u of the lettered rays shows the path of the light after it exits the glass?