11.24: Two wave pulses travel to the right toward a rigid;c 0ud42fepj s boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of tsup j4 f;e2dc0he following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passesckrvr/0alpf86 4n bs/ through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changel8a6r n vp/rbc/fk0 s4s for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downw5/m. wye :rq-imhvvj 3ard through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an angle .v qv-e/:3r iyjh5mwm$\Theta$ 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 occurfnw .ow9qu +1 9rlfr4ss whenever light is incident on

  05.18: A student hold amjv z-ea 41k9m hand 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 and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall 4em1v 9jm-kaz mirror?

  14.25: It is observed that a light ray changes direction when it entb0ge )b-9: dd0wkwmgders a new material. Which one of the following choicesd0-dwmg :ewbdg0 kb )9 is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a t1wcnz 7xv(rdy 0+yng/ranspag/ v7wynnd ycr +10z(xrent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and its:2 1/04vv8a8v;roxoaw se(hy:zo jl(h mst0c g

  00.01: As a wave moves froo/28*j, sh2cfskptk . qs5 rosm one medium to a second medium with a different index of refraction which ofo8kj .frs2p ckstsh2oq/5s,* the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fyj ga 012*8,aieatvzonk2 -xvrom air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency o n1-0*a8joe va2v2iyat, k gzxf the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emitsq 0gy5t9lty )/6jhwow a sound y g/th05y )9qlwo jtw6wave that 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 recta/ut. kst;c2 duo *7pwgngular glass block with an angle of incidence of /w2.spg*; cktodu t 7u$0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed73 risbltu+dx 7 9-m c1rpx s:x5.vuah toward a point P on a boundary as shown to the right. Which segment best represents the refracted ray?753xdx.ix7bv:l+ m rrs ahpctsu-u 1 9

  98.17: Which diagram best represents what happens to a ray of light ente 0hngs1mtm h3,ring air from water? g,3 0hmms htn1Air is at the top in all diagrams.

  94.11: The critical angle of a material is tisya4 r/olc4 v r3ya)0he angle of incidence for which the angle of r) 4/cyar lyvas 3r0o4iefraction is:

  95.12: The principle underlying fiber optics ist8t*vh+; 00bl ite eoejw 3:bu:

  98.36: The critical angle in a transparent substance4bu *1lvud7 ml3ndw u. 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 )ola3a g 1axjb yw2*ca0 icx8:with 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 in1 laaj )cbga2xicow y8:x0*a 3 material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece l7 wbzo,.cv d0 ucv-b3lx/c9tof glass by observing the critical angle of the light in each material. Glass wwvdcz0 -9v/bco .u t73lbl,xcith 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 i+q:wzvixck.)el0/dqgt63 f anto a clear material. When the light makes an angle of incidence gxve/:qa.qi6)dck w t0+ zl 3fequal 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 7cxwyz: cg,* mis 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 positiowcz:, c*yxgm 7n parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium q2cw5cff6.a j*u qql *2 to medium 3 as shown in the accompanying figure. W** qcqfu2la j5cfqw6 .hat is true about the respective 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 i)z8:b,(/ p lko ;,i tepcbqecun the diagram. What may be concluded about the three indexes of refraction, n1, n2 8bt :;o,,/ ()cl eebq ppcukizand n3?

  97.24: The accompanying di5y;0.u ezsj )iinflm +agram 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 t+ e0yufljsi)5min;. zhe following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a mon4p )-8xa y8dg9za3lx h,gkiyiochromatic light ray traveling through 9y )8yk4 x,dl3gai-ip 8zagxhthree 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 o, .+-an y 5xhery1vwwtraveling 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 rectangulard 5h89em , munaa)lo 6ldy:xsl.bv0w* block of glass at an angle of do 90.n5m*,u a6 la: ld)8mwl hbysexv$45^{\circ}$. 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 6t7wd ve52 xs 5/*51i fohn ke;y;ceitg00nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicatesd nok*eet5ii;/yf517s5wh 2 c; xev gt the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glassgdce 9( va+*q-qk hsx 5-6eh.yix uy4p as shown. 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.qeyq +dvh9(xk4yxp5gh cs--a ue *6i exits the glass?