11.24: Two wave pulses travel to th9xncr,)jg6rk 4d b y+oe right toward 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 coincide?d r +rj bo6,cnx)k4g9y

  08.30: A light beam passes through the ai,.ty5x6 j i.bs uge*ki4i (vxlr and strikes the surface of a plastic block. Which pair of statements corre4i,vysk* ei.5(u lx xjtg ib.6ctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thro+u bqp 3d;326mogu mzhugh the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an anm m+3bg hzdup326 ou;qgle $\Theta$ 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 if 07z)foi, p c8 qb/ex/w6 qfdx(nvu9gs incident on

  05.18: A student hold a hand mirror to on.osa1 +qsrfjen+ g.p,k+xv,bserve 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 mirror 1 ft behind her head, she will see the+1vejn,s x n.oap rf,s +.+kgq back of her head how far behind the wall mirror?

  14.25: It is observed that a light b)r5 )miwa;)o mor;ifray changes direction when it enters a new material. Which one of the following choices is the term best assocb5iwfrroia);); )m o miated with this phenomenon?

  96.19: Light that has wavelength of 500 nm o 1v8e-fdzc*7 sr9g*su3tguq in air has wavelength 400 nm in a transparent material. What is the index of refraction of tho ce3dvz*sg7 qu -81g *t9rufse material?

  98.04: As sound travels5ca o03 eryx /4dul9bd v4xdf5 from steel into air, both its speed and its:

  00.01: As a wave moves from one 24s:e93fh a 9z 7byekvev+ry8z n6jfdmedium to a second medium with a different index of refraction which of the following wave properties wouy h7s+e dr e9az:9f42vv8 e3k6 yfzjnbld NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travqfmc+b7 +( qqcels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength afcc(++q q bm7qnd frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the botcp2pi* j/cgr/ few j-6tom of a swimming pool emits a sound wave that travels toward the surface of the wg ccwjrf 6 j/i*/-pep2ater. 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 rectanguk52:2a9vi)vl hjcznl7yjx7rt6 v- tblar glass block with an angle of incidence ovth75-jvvl79 :2nl6ji y atc br2kxz)f $0^0$. 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 P on a boundarza lj/ jz.v2 wz6r:vmro0( -nay as shown to the right. Which segment best rvoz/lra(j0r-w.jzz6 a vn:m 2epresents the refracted ray?

  98.17: Which diagram best represents what h a/d: qj5jle0*2 v thnxnjv-d2ha3zn, appens to a ray of light entering air from water? Air is at jehnz a/tj0va 2 n5x:n qd3 -h2v,jl*dthe top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which jbtn.)/dos +5)qbbj r the angle o5j)snd)bj. r+qbbt/ o f refraction is:

  95.12: The principle und(ues9ej.1jle4e r u+z erlying fiber optics is:

  98.36: The critical angle in a transa. v 0t64gnqeqqti:n1parent 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 index of refraction of n m 4e b(j1ev6ji1l(qpm= 1.5 to material Y with an index of refraction of n = 2.0. If the speed of lighveje1pmibjq 4 (6 lm1(t in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can d/,ey( svnxcn3istinguish between a diamond and a piece of glass by observing the critical angle of the light in each materiavn/,ys3 cenx (l. 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 ligh.:dj8o dh)ny2 o4q 1oti1syeq;qc(sgt makes an angle oyo;q 2hns . soqye ct18:)dg1jqdo (4if 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 refraction kp388y dlh,ztn. The laser beam emerges from the material and hits a target. See the 3thklp,8 yd 8zaccompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 c/z0 jrj3b3/-m,lgrt pf v;gwto medium 3 as shown in the accompanying figure. What is true about the re;/pzbjvm f / g33gr,rwlj ct0-spective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to/t.4oe rdr)f3wjxqi: medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refri .qrrxo:f4e/wjt3) daction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passin6*3y3 sc ovrhog through three transparent materials. The indices of refraction in 3sorhoc*3y6 vmaterials 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 the path taken by a monochromatic light ray t)exfer8cyk2 lzl6 j;* ravelij2;erf l*6eykxl 8)c zng through 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 tr4a la+0 enzvc8aveling 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 le5; v;mvqf c) f4e4neon the surface of a rectangular block of glass at a5f)e;f 4v; vcnemle4 qn 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 fro8qa0fkcnyr)+ m air into a piece of glass. Which one of the labeled arrows best indicates thf+)ka8qyc nr0 e path of the light ray after it enters the glass?

  14.44: A ray of monochromalhjo+6l 0caf -bjb1:sbxyo z 7 m8i4*otic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and *b86m 71-4jhb ao:xfl zljis yo+0obc it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?