11.24: Two wave pulses travel to the right be7t02zm m5i 26jf chl toward a rigid boundary as shown. After reflection oc e j7f 62zmb5m0li2thf 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 l39n449b3sqh ti djlina68rwthrough the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the refleash w 83r3n46ltdjiinqb 49 l9cted wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labedu9-gd j,zluj 5.l.e exf-gf4led B in the diagram shown. The ray reaches a flat mirror plag.g-ulej9 dzj-e5 lx f4,d.f uced 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 refls099job hg8krhn;to/2*pvk/sn :a:ih fvy ) qection occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back r02 pw* kwit-sof 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 w* kw2p st-i0rsee the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it eb *g.rir5 q/2r3qf 5luvyf kz3shh3g8 nters a new material. Which one of the following choices is the term best associated with this phq3/bh y zgvr *f5 qfgu53l2.krr h8s3ienomenon?

  96.19: Light that has wavelength of 500 nm inf i:). c dc4s:j) 8vg-vngezxd air has wavelength 400 nm in a transparent material. What is the index of refraction of the n :g.ed8c)gfd :vxsjzc4-i) vmaterial?

  98.04: As sound travels from ste.)+s3e3 h 7lvkwt6nt 5xb gpstel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differ1virow6 . p-gfent index of refraction which of the following wave opg.i1w6vrf- properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels froc4qq i:wg,.xh ebxg)7 m 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 of the sound as it passes fr iqxgh:ce. bwqxg,7)4 om air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poh73bri)ep 6n kol emits a sound wave that travels toward the surface of the water. In the water, the sound wave 3kni)6p7be r hhas 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 rectangc (cqe52ds 3lm +v5habular glass block with an angle of incidence of 3d5 c b2havmsl+eq(c5 $0^0$. 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 onwl tfg78an0jv7qo /)m a boundary as shown to thew7g/)7q lomt vjf0na8 right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light e zek )0u2ox8qjntering air from water? Air is at the top in all ek2) xq0j8zuodiagrams.

  94.11: The critical angle of a material is the angle of incidence for whsyx88c2 ;jch fich the angle of refractiocs2f 8;8c jxyhn is:

  95.12: The principle underl w*;epig r2b)np .o6srying fiber optics is:

  98.36: The critical angle in a transparzxqqr379 itue 2*:bmment 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 fromo2md*; 30 ox vf r4t1ymx6:bj m9aaqtd material X with an index of refraction of n = 1.5 to material Y with an index of refram1jyx otb*a0dv2mom q;r 369a tx d4f:ction 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 distinguish between a diamond and a piece o ;vpa 1iijzr,wqw)d65 f glass by observing the critical angle of the light in each material. Glass with an index of 65j) vrwiawpq,di ;z1 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 ma f fhjex0f(x1:terial. When the light makes an angle of incfh(xj:xf 1e f0idence 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 lauaw va0gwr 64vfm+9s(ser is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figr+sa 4ga9vu wm 6(0vwfure 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 ci ;239cmbon xx5nhc3q ay3i4u7 n. msmedium 2 to medium 3 as shown in the accompanying figure. What is true about ts3x7o nh5 qmcc yxacm n.3b;ii932 u4nhe respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from mediumkn;e)3yk xdm ) vkep+ibg.fh3hj57z . 1 to medium 2 to medium 3 as shown in the diagram. What may be conclun . 7mkpj3 3gf+ihkvdhyekx ).;zbe)5ded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lis9vtgm 0vk h3.ght ray takes passing thvs.9mtgk hv0 3rough three transparent materials. The 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 path tak*hmgc9 :g o:zxwkm;:jen by a monochromatic light ray traveling through th jgw;m:o9 c: xg:zk*hmree 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 yyf9m) .uav71dx v5 wa($n_g$=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 6,y13:iireyf8 go ochrectangular block of glass at an ane :6ycyo i3g,o hi8fr1gle 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 i zo u:,8ebm1v600nm is transmitted from air into a piece of glass. Which one of theoie18 uv bm:,z 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 glasewz1 vp3ntet7 zs99/ ks 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 ofw3en / 9 1tpzte7v9skz the light after it exits the glass?