11.24: Two wave pulses travel to the right towarkl( altx:j0 k.d 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 of the pulses when the centers of the individual pulses coinci.x0lkk atj:(l de?

  08.30: A light beam passes through the air and strikez8 -b)wezpclxzq 842es the surface of a plastic block. Which pair of ee- b zzl8c2w4qpx)z8statements 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 ile-o+6m8uq wa vsx,i.n the diagram shown. The ray reaches a flat mirror plac6-osai v ,. luwx8q+emed 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 3 gpcky0mx3s )gbc*h* incident on

  05.18: A student hold a hand mirror to observe the back of 5 hfk/ayh9oiz/q;t(ther head while standing in front of and looking into a wall mirror. If she is standi/ okhz hy;(at i9t5f/qng 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 changxgyey2f m:apvh7.,d17 0jqw hhp-u)3h x u v0kes direction when it enters a new material. Which one of the following ch,3f pyd ha 70ex:mqu-07v ph uhwvky.j)hgx2 1oices is the term best associated with this phenomenon?

  96.19: Light that has wavekv0f 3:peukxe36t 7 jelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refuv e6e 0k:3fx7 3kpejtraction of the material?

  98.04: As sound travels from steel into air, both its speed a8(*1 6cpsk1qdjcc8 -lbqtpyr9ms mf*nd its:

  00.01: As a wave moves from one medium to a second medium with a diff;qrugvw915 cv. o63 jb.wxh9kpmb 2ut erent index of refraction which of the following wave propertxo j;.cv9uu9w 3v2qh 5.bktgm6 r wp1bies would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frq3.x. zcw;kfzequency travels from air (with wk.xqf.z z;3c 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 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a soxuamstrmm0:05; a ;r ound wave that travels towam :;mao500rxrsm t;u ard 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 wrmc6 p: d1fkr3hite light strikes a rectangular glass block with an angle of incidence ofc3m6r kpf d1:r $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed totis 6y1dboy)i9 b /*jpward a point P on a boundary as shown to the right. Which seg/o) ib6d9*p js yibty1ment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray -n pnq dph6 ip*1oye5ko3c*o, of light entering air from water y*o-pn,pn*odo6 icpehq3k 15? Air is at the top in all diagrams.

  94.11: The critical angle of a material is tz,w2l 2hhyteq o 2py3,he angle of incidence for which the angle of refrwpo2ht h3ye,q2,2y zlaction is:

  95.12: The principle underlyi sablgx.0(jyh x26 ogb*w;d5 anxu-7nng fiber optics is:

  98.36: The critical angle in a2r(m/6tc n*-s*lsieei fty7 w 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 6jmht4/ms8 tq:b6ydt c6/lho X with an index of refraction of n = 1.5 to material Y with an index of reh dyb6m:8ljqc6/ o64/hsttmt fraction 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 xs h c(g mqpywo1+6)8xand a piece of glass by observing the critical angle of the light )x1o (p 8c +hmqyxs6wgin 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. When the h ngsx/tsf24 qpt/): xlight makes an angle of in4)g/t2h/qtxfs :nx pscidence 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 refra jcjxaga-pc4 vmz(0rb76 )3gaction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser andrjb0(x4 g7 aa )pjzca cmv6-g3 target. The value of n is:

  95.31: A beam of light pas u 5-lfazi,qb1ses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure.l-zf 5,biqu 1a What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown jkw- ,s2 ,9 )6v;ncdnz svpdgs,c-ufjin the diagram. What may be concluded about the three in; vvkcdus z snj,- -cd)2pg 6j9f,snw,dexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the cd,z(*r(rd/2wr. keseqp u t8 path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, nr kp(ru2cr(wd*.etze,/ 8sqd2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ray tryrx b z9xf:13t:i :),azuv.o pmlz2 eeaveling through three media.The symbolao er9:x2fy1:bu,tpv3:xzei mz).z ls $v_1$,$\lambda_1$ , 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 fbczk pw+aw(a.9/ 7, dxn lkf7in 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 rectangular blockb6i*w;a nl 6 ;(flqpwr of glasslw6(iflb;arn ; * wpq6 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 600yjn i w1a:m;o:x r-9nlnm is transmitted from air into a piece of glass. Which one of the labeled arr:jy-nir lm1a: xo;n9wows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular ge-h pdvoly8 70lass as shown. The glass has an index of refraction of 2.00 and it ivd- oe7hpy08l s surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?