11.24: Two wave pulses travel to ttqyn-b/ lp4k :7 crlr9he right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of th: c-llq/r94pt 7ryknbe following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air pp 2kndfhp 16k1k 4ug*and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmiunh*2kkkp64d 1fpg1 ptted wave?

  12.02: A ray of light passes.s7ja3m27urpf: tyn )twt m6e straight downward through the point labeled B in the diagram shown. The ray reaches a flat mett73 n j6p:.wstmuma)y7f 2rirror 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 incident w9 cw jh4pyx4 p0 /gq;qkqxg./on

  05.18: A student hold a yb):j +f4vz0qyos6mi 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, shes6f0+z)yyvi o bq 4j:m will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a lightgs69lnn j ix98d5f1on ray changes direction when it enters a new material. Which one196f5 l 9gs xd8jonnni 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 zn) lg c23zydssy.;5 ,u8b lc20svhrw400 nm in a transparent material. What is the index of refraction of2u y). wsyhd;bl5c,v 3ssr 820ng zczl the material?

  98.04: As sound travels from steel into air, both its sprltub -lh4/jw-6 q2h/u7ow p heed and its:

  00.01: As a wave moves from one medium to a second medium wit0: jzjq04 n ;jwigb7z*xqd f bfuo-0u8h a different index of refrac q d:nfj0gxq8zz07 j;jbufb-u0io4*wtion which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels f2r eoe7 s;hfd;rom air (with speed of sound 340 m/s) into rofro ;ehsed;72 ck (with speed 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 b)wu ;aaf: /dqtottom of a swimming pool emits a sound wave wq ;f/atdua:)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 gzsbcj)q -2 zi7- 1jsclight strikes a rectangular glass block with an angle of incidenc 1 gjzzq7c)2b-ci- sjse 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 to;7azxn0r4 1cbv annn6uv d9 t:ward a point P on a boundary as shown to the right. Which segment best z7u9cr b nna6 vt4dvx0 na:n1;represents the refracted ray?

  98.17: Which diagram best represents what happens to aisb. k f,.rddu1-y (dm ray of light entering air from bf d1(s,. .u-dmidrk ywater? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which ti fk(,x0;l) m 3rnqllxhe a) l;nf(l30xq mk rl,ixngle of refraction is:

  95.12: The principle uro.bt7 vyj3pw 5:.4lrfw7pa dnderlying fiber optics is:

  98.36: The critical angle in a transparent substance su.gvsacte3ym69 y u4u zl;u, n:mk,j8f rrounded 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 wu 5 cj vlvlk-ni*+(vmqtolbn/:v .j6*ith 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 in material Y is v, what is the speed of light io+q(tl5* .n6bklnj vvv- l:j/ m*u icvn material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by o2nh lpoe q;lvzl) 0d;jvb.c3 .bserving the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angl.b n ;qodlcj2 v0.);lp zvhe3le 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. When the light mh17i m 2hx3m8drlnc-c j,o ff-akes an angle of incidence equaj nmd1 ocxi3h-l frm28h-f,7cl 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 materxl5thj s7 (gv)/)mx fcial 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 target. The value of n is: 7 )sxmtx)gj (l5f/ cvh

  95.31: A beam of light passes from medium 1 to oyv(qlb+n: v+medium 2 to medium 3 as shown in the accompanying figure. What is true about the respenlb+o+ v:yv (qctive indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as id2z02v y, fq5wtr8wzgeqvhe f:9 62qshown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and qi9z2gvh0qdw 8tzw 62v rfy5e:fe 2,qn3?

  97.24: The accompanying diagram shows the path that a light ray taky nsdq:mh(8 p+inhf +9es passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3+qfnd9s y(:h+inp8m h , respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shhzc,svg zt19l5r ) y,zows the path taken by a monochromatic light ray travelingg 9v l,y,1)s rzc5zzht 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 travejvd.*basib -9ling 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 rbv:g z,rib+wxz (9ul7ectangular block of glass at an angle r7bi, z gz(bxvl9+:wuof $45^{\circ}$. 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 frx ;ae6pk b04czom air into a piece of glass. Which one of the labeled arrows best indx c eb4zk;60paicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromat3(a z:tx5gqh jic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 ha3:jx5 z gq(tand it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?