11.24: Two wave pulsesjfad0+o lko21rn 3 0ws travel to the right toward a rigid boundary as shown. After refso3jo21 0dw+fl 0nrka lection 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 coincide?

  08.30: A light beam py1;do2uxg-tpb 9v2f jasses through the air and strikes the surface of a plastic block. Which pair of statements correctly deubjd1;ty of2pg29v- xscribes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light0dk.o,unz / 6o8 g0fgwsymno) passes straight downward through the point labeled B in the diagram shown. The ray reacmsk8z.n fu/o 0ngd, 0 y6w)goohes 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 ycn0/c+ xr td-.m)vp1kc-y dq58apbviza(. fwhenever light is incident on

  05.18: A student hold a w ap6y- yzvhqt*64dw-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 mirrty*w 6zp-vy-6qw da 4hor 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 chayu57 ojs90s vztqr9 f.nges direction when it enters a new material. Which one of the following choices is the term best assoc7vz5rju9 0ysoq .f st9iated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air y+q (d2ur -ymyi5azu*ci7 ;ibhas wavelength 400 nm in a transparent material. What is the index of refraction i+icuy(rq my ud5ay2;- i*z b7of the material?

  98.04: As sound travels from steel i4fvkfiewaersk9i;r5k2p ez 4y e1:: 3 nto air, both its speed and its:

  00.01: As a wave moves from one mebvsc 0i/fn:46*um,czd r8 xzjdium to a second medium with a different index of refraction which of the following wave propertie8 m4 :xcfn,u/0czd *zji6sbvrs would NEVER change?

  05.47: A sound wave generated from a tuning fork of sin6m vdez65 f6lbbi6d*dv9 s1 vagle frequency travels from air (with speed of sound 340 d* 6 a6sm vfddleb16vbizv695 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 placed3k8i1 rwyf* (bs zsls7 at the bottom of a swimming pool emits a sound wave that travels b8z ss7 lwkf31i rsy*(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 light strikes a rectangular glass block witzt q j/fpz ytg/ w439 :8ic;,ejhggpc2h an angle of incidence 9c:2ggwe8tc,gzi4jf /3jz t;qp/py h 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 axhu ue)20yf-d0dbn .n 52 aafh point P on a boundary as shown to the right. Which segment best represents the refracted xuhha.n05 20yfn e-)uaddf b2ray?

  98.17: Which diagram best represents what happenrl abn5 5;nm :4p+,5lstakr wus to a ray of light entering air from water? Air is at t:5n5+ s l5wnr rkaa4m,tu;bp lhe top in all diagrams.

  94.11: The critical angle prv,j l)w 0/dpx8n0vm of a material is the angle of incidence for which the angle of refraction is:v p0j,8n v)/ 0mpdwxrl

  95.12: The principle underly(zedw,vm ;xcz *0 i)vwing fiber optics is:

  98.36: The critical angle in a t,ec v.j -vct.jransparent 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 with an i mp 2wtv:y5me27lw:adndex of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in mater:teav 2 w2my7dp w:ml5ial Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamk:g(m( ps l7msond and a piece of glass by observing the critical mk7sg:m(ps l(angle of the light in 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 into4pw.t/vz iei 0 a clear material. When the light makes an angle of incide0e vz t.i/p4iwnce 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 refractilh* q+9m -sp fpncg.2lj6p i;ion n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of t-ppj* ci6nf ;lh+gsmlpi q9 .2he laser and target. The value of n is:

  95.31: A beam of light passef x -dlcwvn 8e4o)-l: .xrk5ojs from medium 1 to medium 2 to medium 3 as shown in the accompanydeon.)fv:wc4r-x5l x 8 lojk -ing figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to mediu.c(f*9gc kjt er-nui 3m 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n u-ki c9ft3c(n*jg. er2 and n3?

  97.24: The accompanying diagram shows the path +gu+2xfbsofgmct0a-1p.oen1hu 12d 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 followo f.1ao1t 2+gb+ 0uud -2mgeshnx1cpfing best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light (50o1 -rg1myfghmbsa ray traveling through three media.The symb 1fy(5mbarggo1m-0 h sols $v_1$,$\lambda_1$ , 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 tr y1i;xr3rb-k pjt 2k.maveling 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 s8g8notfac-z+,h4 qm is incident on the surface of a rectangular block of glass at an angleafnom8z +c-st,h8gq4 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 from air into u37xee (,(nlni95xvi gubc3y a piece of glass. Which one of the labeled arrows best indicates the path of the li5ucvxbluny7,3(e ng 3 ie 9i(xght ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown. uvo w yz.2u3(ion de d;2n9bu m01:qdtThe glass has an index of refraction of 2.00 and it is surrounded 3ob ;2vmde (n.1qzdd u9ynuui02wto: by air. Which one of the lettered rays shows the path of the light after it exits the glass?