11.24: Two wave pulses trav,lfl7 b*mgfb+ el to the right toward a rigid boundary as shown. After reflection of the triangular 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?ml7l*+bb fg,f

  08.30: A light beam passes through the air and str *7jm+oz1 dkhtikes the surface of a plastic block. Which pair of statements correctly describes the phazd +j*kh1o7 mtse changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward x owbrd8w2/ fdfo8d :0through the point labeled B in the diagram shown. Tfb 8d/xd drow2:0wo8 fhe 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 reflectiomc .fxc1f84imkf3g +nn occurs whenever light is incident on

  05.18: A student hold a hand mirror to obser hm4kiwi d,rnv:l(bf) 9h9yvi6w 5mm*ve the 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 head, she will (*l9)ivy hw5wkfm:bhrm9in,4 6 i d vmsee the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes directiovlukiw7y f 5 ezyp+k,+7na4p,pp35 onn when it enters a new material. Which one of the following choices is th, pyp7+5kn3i7w4z ,+lavnkye5ufpope term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm t ueq)qd+ 6 w5n3j:luyin air has wavelength 400 nm in a transparent u3wdlyqq jne t+u)5:6material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed an- jb: c3f1ai0 0+biiamv9 or0ymg mr rq5+9verd its:

  00.01: As a wave moves from one medium to a gj 89 t1hj br(ndh.;html4c*9etr k r5second medium with a different index*hj;n95the r84bj.ck t rhl91rmdtg( of refraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single freq 6q5vd: bw6iqcuency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 5iv :q b66qcwdm/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 bottom of a swimmi3o ggg y ,wgff9-f0)z azdky/7ng pool emits a sound wave that travels toward the surface of the water. In the water, thz)f7/fo dyw,azf90gk-ygg g 3e 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 rectangup7kt rbkf5fj6 c;grs :16 dur4m x9t2blar glass block with an ank961 r2;tu5gfp6 js 74cxb d:fmtr rkbgle 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 light is directed toward a point P on l2 mmkydra5; kq9d0vw,.mh 8ya boundary as shown to the v 98dkyl h ymd0k,;mra2mwq5. right. Which segment best represents the refracted ray?

  98.17: Which diagram best represent4b( ayh -ze)yms what happens to a ray of light entering air from waterzh)yay- meb(4 ? Air is at the top in all diagrams.

  94.11: The critical an d a9l4pgpdone(9ww79gle of a material is the angle of incidence for which the angle of g o97 9p(l eap49ddwnwrefraction is:

  95.12: The principle underly tr(:me9zrt-bn+gj-s4ng-,r, tc sl cing fiber optics is:

  98.36: The critical angle in a trr jq-f7kbb*n1 vd7+ylansparent 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 from material X with an index of refraction of n = q 8,sze.9bwbo1.5 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 l8z9wobeq bs.,ight in material X?

  03.15: A jeweler can distinguish between a diamondp;h+)o a;z pzm and a piece of glass by observing the criticalpzaop+; m); hz 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 materl 9y,pjty1dvs6 a5 0wbial. When the light makes an angle of incidencesp5av0 d91l6bty,w jy 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 refractionm+ uo:t/u/xm l 6o2rbo n. The laser beam emerrlu 2+utxb:o om mo6//ges 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:

  95.31: A beam of light passes from medium 1 to medium 2 to medi3 d:l 0nri4/ j gqfu/s;yskk)lum 3 as shown in the accompanying figure. What is true abou / jrfq;yd4:kl sgi0/ksuln3)t the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 32whw8 8fx. pv* ;rsum8ivs9 ls as shown in the diagram. What may be concluded about the three indexes oslf.w;2vv88uxprh8wss mi 9 *f refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the ks3jb6tf1z fn xvx5468wrp2wpath 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 b3nf5f z8 srj vt 61xw64xw2kpthe following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a5kwk1d6cmm) 7; ctmci monochromatic light ray traveling through three; cm15)kkwid6 c mtm7c 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 ligw od6r4zsib-+ ht 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 incz vu ie+p6oy*4ident on the surface of a rectangular block of glass at an*6 4oiv+uyep z 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 luf q0 5txl6pui/9 4nli,fmq,from air into a piece of glass. Which one of the labeled arrows best indicates 6p/ifx40nqiul m 95u,q tl ,lf the path of the light ray after it enters the glass?

  14.44: A ray of monochroi 3*3 otyhuoormzk-o) ar715o32pm jgmatic light enters the right-triangular glass as shown. The glass has an index of refraction oa3pj ko1)oz5-ht 3r 2ro7moiom ug3y*f 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?