11.24: Two wave pulses travel to the right toward a rigid boundary as sk*xsjhyg 00 l,mjp23shown. 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,0 0hp*sx 3glmj2k syj individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of s+okav6 t r.f6)ovl .i 4:nhpra plastic block. Wh6ol. v.6pnroi:vr+4 ka h) ftsich pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thr/1i 5uq,ijexxough the point labeled B in the diagram shownq, x1jxui5/ie . 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 occurs whenevektd9jz5 j*4oq r light is incident on

  05.18: A student hold a hand mirror to observe t,s7b5 a7/ tpjyu aq+8cd-eo7ko3z+k m(iuhzx he 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 holmh5 3 + ubzy/apx77,k ise +tczqko-daj (o87uds 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 directionn6aqhp )wfjh2;p (x /s when it enters a new material. Which one of the following choices is the term best associated with thanphw xp( q 2/6;jf)shis phenomenon?

  96.19: Light that halabv618cys ggm0 y*n*s wavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the materi*c 60ma8vl yb 1ygn*sgal?

  98.04: As sound travels from steel into air, both its speed d-i 7teu: uqq.and its:

  00.01: As a wave move* sdm;e 6v f9o0 o9i4qpjwhqd+s from one medium to a second medium with a different index of refraction which of the following wave properties would NEV ;9peif6qvd mj9+0q*4hoo swd ER change?

  05.47: A sound wave generated from a tuning fork of single freuip z oy;uyc;bs/ 8g/6k*8t pgquency travels from air (with speed i p ku p6 ;//gzycg;s*uy8b8toof 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 speav ryodqf1n-5. ker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has n5d1 frqv -oy.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 oftk9q/1caicn9uk,p. z white light strikes a rectangular glass block with an angle of 9ci upqckz,k/ an .t91incidence 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 P0vs8l zf95a s+gxq. zsjt:a*: y ja1tz on a boundary as shown to the right. Whichxs0 ss.1zz :+ztjj q5aya9t:*vga8lf segment best represents the refracted ray?

  98.17: Which diagram best represents what hapmtt*12 a,e2n*n wt hlo7q m(xfpens to a ray of light entering air from water? Air is at the top in all diagrq*lo 17n(2htn2,twt m*fmax e ams.

  94.11: The critical angle of a material is the angle of incidence for which;5pc 0eccrh/e the angle of refractiocc/h; c0pr5een is:

  95.12: The principle underlying fiber optics isa4:nvvqg;r1p h8odo p)a*n3o :

  98.36: The critical angl4pgl 4*l0ot m0rtq;ple 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 maluo52bt +v)66 jic6vdn :h bpos8p 0cjterial X with 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 in mater odvln+is0 )t:b6juhpc5bp6 8oj 26v cial X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass b79 ugsi.a:wxr3 e )gi3rlo.hhy observing the critical angle of the light in each material. Glass with an index of refractiona ig7hgers9h:l3. iwx)3 ou .r 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 0 p)clh0bu ioa3 v-h)clight makes an anglecbh hp00v-l a3u)ci)o of 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 m o)5icp(e iox7aterial 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 t p(e)oi7 cx5iohe laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to med(+p5n jref mg(ium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and nepnf+m( g5rj (3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3moci, 28vois tlo7e 9+ as shown in the diagram. What may be conmi 8l7 tosc,oove+92 icluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyfyv9q ;.1gw /nlj q4xying 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, respectq. yv/f 9ljnwxq4 ;y1gively. 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 zt (inf*;l(.t7 fkvt 6bl3ewqo )xz2x light ray traveling through n7 *z .ewlix6voz(;(lf2ttf xb q3kt)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 travelingj0d,erc/zi e2e dz3ek 8(dh m e;:yj(k 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 recta ct 0r)dngb+b0ngular block of glas)+g cbd0tnr0b s 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 transmitted dlicn0u: 7.u nr6 :w6lmg,) x dxawm5e:u1 nxnfrom air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after:l d7nd:5ermnn06, nwxa x :u ux cmw)lu.16gi it enters the glass?

  14.44: A ray of monochromatic light enters the right-trian,1z)-cu mc iw0avh81p7az wroqy89b egular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path o i7h mcqe,)9rb pu-wc a81owya10zzv8f the light after it exits the glass?