11.24: Two wave pulses travel to the right toward a rigid bound 06j3wnu kel8aary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of thewjn6l3 ke80 ua following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through thounsx(ae jv zp:/;f3.e air and strikes the surface of a plastic block. Which pair of statements correctly describes the phaseaof 3j(vpzns.e xu:/; changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes um4::xq 4/p5 eh::keh gowsvu straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at anu :/::khpse5xw4gu4 ho : vqem 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 in/ eb9ho3h u6opcident on

  05.18: A student hold a hand mirror to obs52 etf ) ujrjou+u-4l*vb tckk dt)z2;erve 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 be + 2ukblj 4zru eo25)cu-)d;vt t*ktjfhind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light rak:9s6n g sq. rmh.c,zny changes direction when it enters a new material. Which one of the following choices is the term best associg 9rks.. 6qczs,mnhn:ated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a trab5k78; , 4qkd b32nyr3ssj n ikrten;vnsparent material. What is the index of refraction of thnjtbkiskr85yns3; 3nv 7 ,q 4dk2be;re material?

  98.04: As sound travels from ste5 ic0uwesv x/-el into air, both its speed and its:

  00.01: As a wave moves froru4o 7 6n8csxfuj8 zp.m one medium to a second medium with a different index of refraction which of the foll4 pu76 fz. oucj8x8nrsowing wave properties would NEVER change?

  05.47: A sound wave generated from a tun wwm.fa9gww 2js,wl90.nttl 8ing fork of single frequency travels from air (with speea0tn 9sltwfwg 9 .82lm,j.w wwd 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 thd9wa6,3nc)cln a h g -hie,, og:qpjm+e bottom of a swimming pool emits a sound wave that travels toward the surface)d,n l,hwn9, gcmjc6goea-pq a:i3+h 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 tm1;rbc9/h o kwhite light strikes a rectangular glass block with an angle of incmtbh1 cr9ok/;idence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lightz .jhvc/uq:1 r+fuwdj,x o;0r is directed toward a point P on a boundary as shown to the right. Which segment best represents the d ju0rj,q :/hzru1f+o wc.x v;refracted ray?

  98.17: Which diagram best represents what happens to a ray of pee5gh ay j:;1light entering air from water? Air is at the to1:;jgheyea5 p p in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for m7ngagqkcw6;i37c ;: h wcpy-which the anmccq cg-;63w;g y7h7:iw k npagle of refraction is:

  95.12: The principle un n e9g9du9 ;vo5ddf6-,oyj-fx yp7gwuderlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by airgulv wgrp2tz;26c * 0g 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 o3;bi9*ds dal jp .on*roo2pmo1 i0910sklunof refraction of n = 1.5 to material Y with an index o1or 2 .*joba9n1l*onkdsi00ud39s ip;ooplmf refraction 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 and a piece of glass by obse6/ zwt(okvr6urving the critical angle of the light in each mat(kz/6tw 6uovr erial. 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 ()6diot rmaa. a clear material. When the light makes an angle of incidence equal ar(i mo.6)datto $30.0^{\circ}$, 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 xs0 l,ymiwe1*bi. of4embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for*f e4i 1xbiy0.lwosm, 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 to medi*5tnsm -lh8 +ai9g j2qdf/ tnuum 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, tiu l8jgq snt+5 *n-ma9h2fd/ n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2fz x naju335+f to medium 3 as shown in the + na33u5f jfxzdiagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying di6v4-:oiv c+ zz y2fjnvccqj6r*1z /eh agram 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 riey:fz+jjnzv2q6cvc4 vo*1 cz/h -6, 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 monochroma+iphiwr; *6s9got* ,rwk+t ljre 3d0ptic light ray traveling through three media.The symbols 0++*wrt; lo*r9kw ig sr6dp3it,ejph $v_1$,$\lambda_1$ , 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 in glass znoop -/r+hw(m;o2kh -dgt6qr;xe5s ($n_g$=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 rectangul nmp6.c 7ul;l5loc :oqar block of glass at a opll6n; :.l cu57qmcon 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 transmitte .ij8rfx- fy +nnghj::d from air into a piece of glass. Which one of the labeled arrowshinn8jjxf -y.:r+f: g best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromaqxgvp.v +;ze;a9* me vtic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Whichzvgp*qeem9.x; v ;av + one of the lettered rays shows the path of the light after it exits the glass?