11.24: Two wave pulses travel to the right toward a rigid boundary as shrzywi:y+ k59aown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of t 9yw+r:iz5kyahe pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the t3z8uw fd 5-cqr/nc3pg5 rkf.air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected warwt8 /cqr ug-53z3kfp n. 5fdcve and the transmitted wave?

  12.02: A ray of light passes straighr1/l,9m2ox8y/5ztbn4cmi n;epm v e93slvbt t downward through the point labeled B in the d 9t91tc;e/xol py,s5mmvz 4 le inn2/mvbb38riagram shown. The ray 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+tdwg 83jchq, .0kesc occurs whenever light is incident on

  05.18: A student hold a z/ 6j ivlz.6neu ber)4hand mirror to observe the back of her head while standing in front of and looking into a wall mirro6n eb.ij /)e6vzru lz4r. 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 see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray co8czji+xg dk+qm: 1gzq/2 ;w yz(bs4zhanges direction when it enters a new material. Which one of the followin:;g4 zwqzj+q bkgz/x(8yzod1 mc2+s ig choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 4n/oz*i t3x; vi00 nm in a transparent material. What is the index of in3zt vx/;*oi refraction of the material?

  98.04: As sound travels 0 ipb/rd5d:tw/a4dbd from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium witzik67 inh yf; pfj/4v7h a different index of refraction which oh 7pfii4n ;/j7 vkyzf6f the following wave properties would NEVER change?

  05.47: A sound wave generated from afwk +r)hewdy.2+afd2dcr1i + tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (wi. +d 2+c12edk +daryw)w hirffth 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 soci 9w0s 4zk6mmund wave that travels toward the surface of the water. In the water, the sound wave has a frequ9zmw06 c4kimsency $f_{water}$, 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 rectangular glass block with anabfv26l+ 25c d v0njy14,eo7 oooq fzy angle of incid4qvloeon2,5yz y0bov jcd f 7+a 6o12fence 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 diq5:bmex( +bgp rected toward a point P on a boundary as shown to the right. Which segment best q( me :bgb+p5xrepresents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering 01rv fzpbm7r(ve75x0kf g1j cair from water? Air r vmgcz0x(7fk p v5f7jbr1e10is at the top in all diagrams.

  94.11: The critical angle of a material is the anglwbzk/7csc5 0.k y4 srqe of incidence for which the k/5cy b7wqszr.c4ks0 angle of refraction is:

  95.12: The principle uz1h n4hcsa(4rf cqu (/nderlying fiber optics is:

  98.36: The critical angle in a transparent substance suwx* vpko.u. wn df2y( ebr:k89rrounded 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 refxqfy,.w3on z 8mo9dh z -b/0vuraction 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, wh0oz -wv3y mb/h z,xno9 f.dqu8at is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by i8s8fd1)bfm- ,6k,jiniyks wobserving the critical angle of the light in each material. Glass with an index o fiwjf1)sii mb, k-8s 6,yd8nkf 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 lig2f6f6hzhsg j28nt (ejht makes an angle of inzf226h jtn (fgsj6he8cidence 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 gr0d8,l/ka kaof index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for thrkg a,dla/08 ke position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 tew : 88fda*yzdo medium 2 to medium 3 as shown in the accompanying figure. What is true abo e88a*dwfzy: dut 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 in7 4jhmunu,,j, +xrwvl the diagram. What may be concluded about the three indexes of refraction, n1, n2 and 7ju4wxjl+v r,,umn,h n3?

  97.24: The accompanyie9 8p )jxz+swxjm36u nng diagram shows the path that a light ray takes passing through 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 indicen s3p6u8jmwx+ j z9e)xs of refraction?

  09.34: The diagram below shows the path taken by a monochrom; o:7w032 behno 8hvtyzik )lqatic light ray traveling through three media.The sym0hvi 8;qtlyeh oz3w)n : 7o2bkbols $v_1$,$\lambda_1$ , 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 ligxlcc17-jzm* jv9z -qy ht traveling 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 recwuw ,v 2x ;0 au(nkfv6ouam+7ztangular block of glass at a w,72;anaz ouv +0vfxuk(mw u6n 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 wavelengtha*ao6-i zb 7zi 600nm is transmitted from air into a piece of glass.zzi-oi a6b7*a Which one of the 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 glass as shown.c2pbyml +bf(zame. c pjj9n6c ( xko31g;q12a The glass has an index of refraction of 2.00 and it is surrou(m2zpc olagk j19p q6nyabce13+(bxjm;c2. fnded by air. Which one of the lettered rays shows the path of the light after it exits the glass?