11.24: Two wave pulses tr c;oz( t8* adhch+oq+navel to the right toward a rigid boundary as shown. After reflection of the trianguh+*ca+n; qtz (8och dolar 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 through the air and strikes the surface of a p-xpuo .ali2 nfh.:y+n lastic block. Which pair of statements correctly describes the phase chayhnp-ux+ f aol.2 .n:inges for the reflected wave and the transmitted wave?

  12.02: A ray of lighttr2wvtn2yl* 7p ; 7zpg 3)sw3+crxgnxaq0lh1 passes straight downward through the point labeled B in the diagram shown. The ray reaw wtn3 ;cx2r x07a pv lpr)h7ltyq2 gsgzn*+13ches 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 iwm;fx um:vd3x+o adf) gsm 8r*z0sp6.s incident on

  05.18: A student hold a handsh3f.n9a h+ 4i:lf 7xbootmn* mirror to observe the back of her head while standing in front of and looking into a wall mirror. If she is stm+.:l 7xonabo3*ifn t 9shf4h anding 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 changes direction when it enters ..g6bx5yn kcia new material. Which one of the following choices is the term best associkxi 5 6gn.c.byated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelengthm8xycb:7p (pgazo ; h2j q-dc7 400 nm in a transparent material. What is the index of refraction of the materia8cmya-; (p7 xq7 ohdc :2gjpbzl?

  98.04: As sound travels from steel q vs9i 0ewow)n89od( ginto air, both its speed and its:

  00.01: As a wave moves from o+8;ouz6klq d ane medium to a second medium with a different index of refraction qo+ lz6 u;ka8d which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork o0iu 8,f2p-p.obpgg,m7uo vz of single frequency travels from air (with sp. -vm0goo2,b7,8upu ofpgpzi eed 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 from air to rock?

  14.28: A waterproof speaat 3sy,lv w9zm+3h *xpker placed at the bottom of a swimming pool emits a sound wave tvyhptw+ms * xa 33l9,zhat 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 ol/w7u a:n3vom ky7cs/f white light strikes a rectangular glass block with an angle u lw7mvko7/:/yacns 3of incidence 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 nff5;qzqkyb 21(yk dlt61q :sa point P on a boundary as shown to the right. Which segment best represents the refracted ray?;kdf b tqyy156( skfn1:2qqzl

  98.17: Which diagram best represents what happens to a ray of light entering airaq/) p(rcqvmh7 zjz4) from water? Air is at the top in ah a7zv ( 4pmcq)rqz/j)ll diagrams.

  94.11: The critical angle of a material is the angle of incidence fo.9qw7 te s;wdgr which the angle of refraction i dtgew w;.9sq7s:

  95.12: The principle underlying fiber optics is,uc g5tls j4o;:

  98.36: The critical angle in2,h( k;rz b+km0x/pg vpaebt+l ;ss6u 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 w uh73dc qid.nhi (ge,lq2ll)k 0:rh ymb4mi9+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 gir cq :i.k+l)ll i3m qdd047h(b2ehhm,9nuy v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by oo4*vrktx 1t9fbserving the critical angle of the light in each material. Glass with an index of refract v*tx4tko1f 9rion 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 g 7e4f sipeqq17d3s;f. When the light makes an angle o 3q 7 qfe;egsp1f4isd7f incidence 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 (wolp7:4kwikl/gv yv02s7g w refraction n. The laser beam emerges from the material and hits a target. See t y7w0olvvwgskwki(/p l:g4 27 he accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medie uwup7 i d z3:f./sb9difb8j7um 1 to medium 2 to medium 3 as shown in the accompanyin.jdi 7e9p:bs w f3z7bui8uf/dg figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medi9z b*/8e7fe vsv:wjrzum 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refract79wvj8 *:erbzzvef /sion, n1, n2 and n3?

  97.24: The accompanying diagrr4 .*5ld9 ac.bt. siehfdmss.am shows the path that a light ray takes passing through three transpare ecb.*4.d5hd f atisrs9l ..smnt 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 q)uw mfpab2- 0the path taken by a monochromatic light ray traveling through three media.The 0u-w)famq p2b 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 trl7g jvpwf,mwivm,k54,fy(p x:f +q .zaveling 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 f wylne f)8*f2incident on the surface of a rectangular block of glaswl)f*fy fne2 8s at an angle 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 transmitr3+c178y g3vn t/lh g yrn4qnxted from air into a piece of glass. Which one of the labeled arrows best in rn17tyyq hcg/r 3v3gn8+nx4l dicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass/c wip+qdc-*ob* 1rqj as shown. The glass has an index of refraction of 2.00p-rjqi qd **c1w/+cbo and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?