11.24: Two wave pulses travuug240rpdrv r 9q-m m3el to the right toward a rigid boundary as shown. After reflection o09qgmpvu 34r -rdu2rmf 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?

  08.30: A light beam passes through thnhfhk;/0 n bz:e air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected w/fbnh 0;n: khzave and the transmitted wave?

  12.02: A ray of light pr8qck7jt 8:j+oyv;sa6,v jjvasses straight downward through the point labeled B in the diagram shown. The ray reaches a flat jcy j8jkvs:tvr + o8a ,q6v;7jmirror 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 refleh+6/f rr.fbf5ozix/h6 ).tpvol 7s5kk9 kkncction occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe cex.es hm ,2mi*,)dgu 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 see the back of her head how m ,ixgd*su e.,mh )2ecfar behind the wall mirror?

  14.25: It is observed that a light ra.a gb3j/dxv*b2glnsaigvv v5* l+20py changes direction when it enters a new material. Which one of the following choices is the term best associated with this phenomev 2bv a*dg*gv25j+i pan0.bgx sl v3/lnon?

  96.19: Light that has wavelength of 500 nm in air has wavqv.- 1ziq mf 7xuoot(5v s)kn(elength 400 nm in a transparent material. What isvmi . 1(ou(qz-7)qsfk5tv xno the index of refraction of the material?

  98.04: As sound travels f/r1w cj;np; rj y 767u;:zy23ybjqqm cjy7hx crom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different izx;xl *g.mg 5dndex of refraction which of the * lgxg5d xz;.mfollowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuninw gx:;s*nrr8qvijad* n( y v08g 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 (d8gi y8 anv0*r nxw*;sjr :vqthe 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 *vxd)jr xmq1 ;pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave hxq*j) 1;xmvd ras 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 a09l mwynk(/,cm2jhgqpz. -om+3u9 lfornb)with an angle of incidenc /l( n,99f mb 3ynzmakmo2 -lh+qur.pco0gj) we 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 towar axo19dm(:70dj- bsq 7mxyfr,wmqep+d a point P on a boundary as shown to the right. Which segm o71:-m0(pmd dwaqqxjbr+symx fe7, 9 ent best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enwkhv+o pmj7. 6tering air from water? Air is at the tok6 pojm .7v+hwp in all diagrams.

  94.11: The critical angle of a material is the1ijq, rgb5b/*l vf4eff8.-a s8evd ub angle of incidence for which the f* vle,ibqusf jre8-. 5f ba1vd84bg/angle of refraction is:

  95.12: The principle underlying4a(3nm fyz 0uh fiber optics is:

  98.36: The critical angle in a transparkpsu rd5y1snv5*w g6/ /y3mzlug: r*oent 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 = 1.5 krm.qxhr g.)ah ll9, 6k c;. axxhg0-n)sevp2to material Y with an indg hrqx,-. .v).p k9sl gklh)he26 a;0mxrxacnex of 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 diso /g*38kti zok i6p+ ynaaep++tinguish between a diamond and a piece of glass by observing the critical angle of the light in each mkp+oo 3z/i* 8aa yn6+kgep+t iaterial. 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 material. When the light makes an/.xn +9pb; kz8j oujyn angle of incidence equal to n+ ; kybj9u njz/op8.x$30.0^{\circ}$, 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 ind 5i(i5c)3pv d+chnk csex of refraction n. The laser beam emerges f5 ) hci+35i scvcd(kpnrom 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 pass:+yid.w yeypf 21zw4s-oetvdvp7 7g1es from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refgwp w s 2y-i evp ef4:yy+v1.dodzt177raction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown if .h*/m yam ;1usn l4;ib*oktsn the diagram. What may be concluded about the three indexes of refractionnat i4hbs*f m/.ys;o*k;um1l , n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passiss3 xgi:hh a.s;nz 0p1ng 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 dp ssns1 : ;igazh0.xh3escribes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light g+0h05r)r7ntgf pya n ray traveling through three media.The symbols7) +arrnpf0ght0ng y 5 $v_1$,$\lambda_1$ , 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 g.cvjfz)e5a wk wo-yf+c5g-e;*5*lv xh on9qelass ($n_g$=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 i ik hmg*r70*s6am op;vwu9p lrl5;wb1 s incident on the surface of a rectangular block of glass at 7i *rsghrkl05l p;*b1auvw96m wopm ;an 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 a *)k3yy3gl 1-;oau3s aevqyhr: v1v hfir into a piece of glass. W1a yy*qu kh3vs3 3ev:hg l)1o;ry-fvahich one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangvie: lwo-y*c1t7 :ea:oh2 axzular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of vozy:eo1xwe 7 *a-h 2lcta:i :the lettered rays shows the path of the light after it exits the glass?