11.24: Two wave pulses( v wcmh82 i:sgzdwz wp9e1ld(c+ t/1q travel 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 ofmq8+zhid e (p wlw1z/(:1vs 9d tccwg2 the pulses when the centers of the individual pulses coincide?

  08.30: A light beam paooxwf*i (m+iem51v3 qm ,i1-0cqmrm 2 ba6jlr sses through the air and strikes the surface of a plastic block. Which pair of er, rmb-mli5fqm1ji+oo*vi (3 m6x0 w2q 1 camstatements 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 -vpzhsez9id d :2v;i9+bt;qtthe diagram sheh; :9q9td s ;vzzpv-b+it d2iown. The 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 reflection occurs whenever light is incidenh a 6jd1atv7.l wacjl(d8(nl 2okp8z6t on

  05.18: A student hold a hand mirr0l4a hzj 3tvx6or 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 mi3txzj 0lv6ah 4rror?

  14.25: It is observed that a light ray changes direction when itbhhdu,z .2-rk enters a new mater2dk- z,uhrbh.ial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nmd-bpbp wz36y 7 in a transparent 67pywb- pbz3d material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed a- 1 0-qbdriwhgnd its:

  00.01: As a wave moves from one medium to a second medium with a 8vnf n) 25khcu4/ihj ndifferent index of refraction which of the following wave properties would NEVE2in54k uhv)hf 8n/jncR change?

  05.47: A sound wave generated from a tuning fork of single frequency travelvs. ogq hyvv)8o1t;9vs from 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 frequev); vsyt98.1vv ogoqhncy of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emit48f.h gk2f-:cwa69:ne ivkdb ajl,ets a sound wave that travels toward the surfnaw:, - gckf24ikehe68.j9bl tv: adface 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 whx7z4u smgm76/u1 sep2oeh 6om n5ln.y ite light strikes a rectangular glass block with an angle of incidence oo up ez mg6 4x/lmnsn2oeu.y7 1hsm765f $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directeoq85:i k2n2; ef xmi 9kew(eaid toward a point P on a boundary as shown to the right. Whicheik8oaw2 qmx9 n2ef5ki;:(ie segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray1tamuh-rd0; k ho ,.mu of light entering air from water? Air is at thethua01;mu-.,rd mh ok top in all diagrams.

  94.11: The critical angle of a material is the angle7npcjv qf +xtmd2k84o ip6h47 of incidence for which the angle of refrf278xcv pj4hn p tm6o7iqk4 d+action is:

  95.12: The principle underlying fiber opticva*1 sgy0u u4ls is:

  98.36: The critical anglk.05ix1-ewqb hs q5ife in a transparent 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 = 18jf/dg kf : hhda2uw5*.5 to material Y with an index of refraction of n = 2.0. If the58 h:hdf/udfjkwg2a* 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 diamond and a 3zm3 jp6tiz; /n4u; d krm a/(e+bvclqpiece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.5i6lj3;pn;/kturm 4qadb cz/3+ (vmze 2 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 cleai (d5h.bniuz(0 .rn+huv/cs -2 ssvh pr material. When the light makes an angle of incidence eq0bvs +i5(n-.r2uv pchn.(hdzus h/siual 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 embedsdh3 66 ;a h,mhk3bupg8rpb5 lded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure fombl hu3d3s6 hr5;kppahb,g8 6 r 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 ii1* 0zk8qg ,e06w c ,ktofxzsmedium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n30 k6*o e0 swizkif1z xgtq,,c8)?

  00.14: A beam of light passes from medium 1 to medium 2 to med nts;v6)h ghe+ium 3 as shown in the diagt)v6hs;en +h gram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a /) j ytcef:4uolight ray takes passing through three transparent materials. The)f ojc: etu/4y 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 refraction?

  09.34: The diagram below shows the pat7r6 f9g,xtow88utss 1) ggvsuyeo:5h h taken by a monochromatic light ray traveling6er8s7 5gous sf8h yug):t,9wxtg1 ov 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 traveling in glass 9yndem1vo d w2u+3l2 a($n_g$=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 tbgh1 nu -g8qa1d;hepwp/6f r2he surface of a rectangular block of glass at an anq1g2/ug6h a;e1 wfrdhnpb 8p -gle 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 air into a piecn,2pr 4/ilk +a)kky7m,h6 qenx*kfv oe of glass. qka nk4+)2l re vopn ,,k6/k ix7mh*fyWhich one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic lvio +ep.gf2b *ight enters the right-triangular glass 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 exits the glass?*. gbfei 2po+v