11.24: Two wave pulses travel to the right toward a rigid bounda i8v7g+j8 s5w / iye/qffucv9zq22 aylry as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents 82 j q2 layu78i/9weg v+cfs 5vqizfy/ the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam pas/leg6 j ,p3ul5 7mj5m4nyrz boses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes f / 3lj 6m n4bm,7z5ly5gropuejor the reflected wave and the transmitted wave?

  12.02: A ray of light pasm) t)n0 xfu fxn0,qr1rses straight downward through the point labeled B in the diagram shown. The rayx0fn tr)x nm,)u rqf01 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 occs 6(puhrur+mzb3 vxz)9aa,: zurs whenever light is incident on

  05.18: A student hold a hand mf9 tsjkl xa*95wi*jyk:6k2 mkirror to observe the back of her head while standing in front of and looking into a wall mirror. If s5wkti* 29ajl *s6kxj m ykk:f9he 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 mirror?

  14.25: It is observed that a light ray changeslx0j.5 a+xmdxu* vol1 direction when it enters a new material. Which one of the fo +0xm.xdlua5 x vo1jl*llowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm 79q2qkk3olnnrwr5;(f /j hq win air has wavelength 400 nm in a transparent material. k /r (q57rwkonl3n 92qfwjh;q What is the index of refraction of the material?

  98.04: As sound travels from un- /5gh49driizoq f5steel into air, both its speed and its:

  00.01: As a wave moves fkv6 d/yn9qnmy-t1 z 3qrom one medium to a second medium with a different index of refraction which of the following wave properties would NEVE9-yz km/yd nnqt361vq R change?

  05.47: A sound wave generated frmt)vkz:qs;/; s yh 3 )kku xx+5ky:yxwom a tuning 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 the wavelength and frequency of the sound as it paz /x;x)5wk3y k)s;k: xmvy:u+skyh tqsses from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emi0ompv6 z8s6fh ts a sound wave that travels toward the surface of the water. In the water, the sound wave has a o 6sz8hm0fv6pfrequency $f_{water}$, 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 re a 68jtv5aw:i yo1jr v35gyw-dctangular glass block with an angle of inci5gvdryj8i5t aj 1 a 3w-:ov6ywdence 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 bounube0.tj;mr /8 klurl7dary as shown to tht k/uum.r;j0elrl8 7be right. Which segment best represents the refracted ray?

  98.17: Which diagram best).hjav0* g(kgsab sdu t)+:vt represents what happens to a ray of light entering air from water? Air *+h k:v)tv ut s(gs.b)jgd0 aais at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which t.rfl xzyp/o jc-18 :qmhe angle of fp/zyjm1 :.8cx rqol- refraction is:

  95.12: The principle underlying fiber opticsr t*xz4g 6.fy8k, zvdb is:

  98.36: The critical aos kt6xdj98e.(ki ft .ngle 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 ze ;vnlj .:n/f= 1.5 to material Y with an index of refraction of n = 2.0. If the speed of li :nje;zv.f nl/ght in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and t ,e)u. (ird42pbqc6tg)kzq a a piece of glass by observing the critical6uctgrdbp)e)2k. 4,a z iq (qt angle of the light in each material. 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. Wr )-zdi7+jfj1k y ky8rhen the light makes an angle of incidencerjy81dz f)7jyi k- r+k 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 laser is embedded in a material of index of refraction l. 44g b/6mvntu0teuen. The laser beam emerges from tt /lg.4mbet6 e 04vuunhe 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 passes from medium 1 to medium 2 to medium 3 as shown inrf3 lck9jp- r:l (ttd( the accompanying figure. What is true about the respective indices of refraction (n1:kp-fjclt(lt 9r3 d (r, n2, and n3)?

  00.14: A beam of light pa4v-i (s/6gxxm6 u q*hbkipvl+ sses from medium 1 to medium 2 to medium 3 as shown in the diivk-xmugi*/ hv+ 6s4q l6 b(pxagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light im0-y-+9srft -51rindoocd .8 m w 1pivz9rxc ray takes passing through three t-i-r9t.-8p+m5ddo vxinfczy0 w1omc sr1 i r9ransparent 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 path5m:(8zyti,qfehxg0q +qqa 7 c-ze2iu taken by a monochromatic light ray traveling through three media.x0mui 2g-q7e8qha5f cz+:et ,( qizq yThe 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 ine;-i5j ih8d rs 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 rectan-2u8c g8qq8 ci 2 8ivrem)ua7mec dh;kgular block of glass at an angle o88i2;cev8 7ac2-)8 r heqckud qmiumg f $45^{\circ}$. 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 piece of glassw81 rkh-( bk-he:shou. Which one of the labeled arrows best indicates the path of the light r hu--krekoh1s b(w h8:ay after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangush r+yxuh1.g6tm.5 h plar glass as shown. The glass has an index of ref5mh ux.r16h.p yhs+gtraction 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?