11.24: Two wave pulses travel to the right toward a rigid boun0m r x7ui-xsm4dary 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 - 7r4sx muxmi0individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surfacerd+/t (q0fy it of a plastic block. Which pair oyi dtrf0/t( +qf statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in ti j*l,xwx.3d*fejo kg xm:h20 g08ktnhe diagram shown. The ray reaches a flat mirroreg 0ok3 kxh2jm8fxdgln :,t jw**i 0.x 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 refleywa)h eag*3 gp-(ey3dction occurs whenever light is incident on

  05.18: A student hold a han4uo- *zyo9shzx-(i:qh1 q lgpd mirror to observe 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 andxy*o-: q- q(soz9l hzuip4hg1 she holds the hand mirror 1 ft behind her head, 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* coi r(mj838er7 nrkw when it enters a new material. Which one of the following choices is the term best associated with this phenomrw i88( ce7kjr*n r3moenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a t ,bkwqap1 )x0ay skt9;ransparent material. What is the index of refraction ofbxay tk10 asqk p),9;w the material?

  98.04: As sound travels from / maq p6:w hp(-r3wxpiv 7qdt*steel into air, both its speed and its:

  00.01: As a wave moves from one mednw/as1 0johopq bl50/ ium to a second medium with a different index of refraction which of the followi01/j sh onpow0 /lbaq5ng wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single fre,ygr+xf lvcy-m dx8+:quency travels from air (with speed of sound 340 m/s) into rock (with sp :,mdx+g8 fyly-xvr+ceed 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 bottom of a swimming poor ec95,ug0wj il emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a frequc9j 5ri,e0 wguency $f_{water}$, 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 wiekn4 jn.m05y;1x j efo 2/ m as+jedxn;/3zwveth an angle of incidence /swmxejee3ynj1f4 + nen0.x;kvdz5;2/mjao 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 nbgj7zf8a*ll ty-gc .2s8d y( shown to the right. Whi*8n 8 ( yayg c-dg7ltjs.b2zflch segment best represents the refracted ray?

  98.17: Which diagram bes+:w avwijlp: p8u(/ rx-gru4 3ua lcnars;+0st represents what happens to a ray of light entering air from water? Air is at the top in all diagramw :vlj r nu;c8 (0srs :x-w+4upa/pagaur+ 3ils.

  94.11: The critical angle of a material is yehae 0m :7cah0dyh 1(the angle of incidence for which the angle of refraction i 7(y10emahhh0yecda :s:

  95.12: The principle underlying fiber opti rd0izhar d/d ;nn(90kcs is:

  98.36: The critical angle in a transparenrf 1a.., aubxkt 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 refractiolvgce *lsx)9hr4m0f 6n of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of li49r 0hc*efmv x) gs6llght in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a dzl fd9w k2np:r3vxgb88:x*b jiamond and a piece of glass by observing the critical angle of the light in each materdlrn*:fj 8z bv8xk2pxbg w 9:3ial. 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 ckqyg. vap0to+;p 9b;m 1)h ixnlear material. When the light makes an angle of incidence equal to m)0.akn xh19p+ iv;bpgt o yq;$30.0^{\circ}$, 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 25;;(peexi ot9ugz iw embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and targeit9 x; wgoe e2p5(uz;it. The value of n is:

  95.31: A beam of light passes fromef4x4k07. hpvjjc* bm medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refract4 ph7.vmbfkx 0j*e4jcion (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mediumk(1sx *x69rx7k:ipppqk9qeqev be* + 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1qk7 96x(:9ix e*eqp r* p+kxsv1b epqk, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passingy wbv i n -k,6nmgq/*rw0xee y:i1g31t 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 descrg1w*x: -1w3 rgi yn qb iv/k6eymet,n0ibes the relation between the indices of refraction?

  09.34: The diagram below shows thsw e .j05kg5ejxn (osg.m)09dng/exbe path taken by a monochromatic light ray travelinxks9 o(wj sgdn/ .5eje0.bmg )e5g0xng 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 travelj r8liqr b;6b)ing 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 incident on the surface of a : 4trg3 v n3ghh9jim0zq i0qsd8d,m/e rectangular block of glass at an angle dhsqhgq3903r:g 48mej ,itvzm/0dinof $45^{\circ}$. 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 frowg7hj+u4k ;hbm air into a piece of glass. Which gj4 w7k+;uhbh 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-triangular glass as sbgspwn1 9f:2m 39q4aut f0 aqmp(u .fphown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it es fp(f31b a 94 fwmppn:qq umut90.2gaxits the glass?