11.24: Two wave pulses travwoybb-+yo 0ytu/ uum 23y p+(vel to the 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 tyb+y ou twu um +bvpy(320o/y-he pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikescahu+ r ely*u0phb 7dg83ma- gduz8,9 the surface of a plastic block. Which pair of statements correctluca*m, d3+gyua0re b phzu d h9l78-g8y describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thro0hb j7p+i fn-o/hn93t anhbg;ugh the point labeled B in the diagram shown. The ray reaches a flat mirrh gta+pb 7of3;9hbni /-n0njhor 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 kul53+xfw;i3n zz0ti tp4-sw whenever light is incident on

  05.18: A student hold a handv3e 8u*l2oa ur 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 mirror 1 ft behind her head, she will see the back of her hvuou l *8a32reead how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a ne:*/kiz sg dqinagmjb.k: + p+)w material. Which one of the following choices is the term best associated with this phenomenon+.*pbj:ziaqm n g )gis+dk/:k?

  96.19: Light that has wavelength of 500 r/umlpa:j3 )f nm in air has wavelength 400 nm in a transparent material. What is the index :3 jrmp)/l fauof refraction of the material?

  98.04: As sound travels from steel into air, both its /jz :j ib x7qoqmt 9 tw+.a*81ekg4vjsspeed and its:

  00.01: As a wave moves from one medium to a second medium with a dif82un 1 grch g8tf5,llgsn2 kj0ferent index of refraction which of t fn ucglt,8j0hg1s 5n grk8l22he following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single freoac((a rg k43bquency travels from air (with speed of soa(ob4 c(gar 3kund 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 the bottom of a swimming p6z, bdfhns7lh1ek910v z jt/pool emits a sound wave that travels toward the surface of the water. In the water, the 6bspfev,7hh k1t j/dl1 n0zz9 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 .zx0z u)nfk*xy0 n+a qstrikes a rectangular glass block with an angle of incidenyzkn x*xn+ q0f )auz0.ce 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 P on a boundaqh+d y 230*qvadwv b5rry as shown to the right. Which segyd5qb 32v+* qhwd0arvment best represents the refracted ray?

  98.17: Which diagram best represents what happens j/4 rbg+kwduvlho/fr 3 n+s: 1hbm(6cto a ray of light entering air from water? Air is at the top in v:bcj 1fgrs++dlk r3o/u /nm64h hwb(all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which tb v+2w,)rvoa phe avp2 ab,ov)wr+ ngle of refraction is:

  95.12: The principle underlying fiber optiz -py2oj rdgc, sks/pc.5k* ,yve3x .mcs is:

  98.36: The critical angle in a transpy*ilt -el7it* arent 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 = 1a-f( -h q dbke++y5pkn.5 to material Y with an index of refraction of n = 2.0. If the speed of lf(nkehbd a5y-+pk-+q ight 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 obser0q8 fzh.1)wrkcgpf ; svinc krfhz8fs)1;q0.g wpg the critical 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 into a clear ma k-c7fq) 8)si 5yy**ut jwwpzdterial. When the light makes an angle of incidence equal t-d*jiz)* w cq uf5yspky)w8 t7o $30.0^{\circ}$, 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 embed4qgo/*bta5, 3 r)zo bjep ylc*ded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters ocgt *a/*3 lr ,p)5obb4eyq zjof the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to mediug:4i ls5ks:sn4fv;jdm 2 to medium 3 as shown in the accompanying ff: d5n4:4;s siljgs vkigure. What is true about 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 sfda0ke 7h1ajn: 6ydg *hown in the diagram. What 76dk0*: ehadn1gy afj may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passig)vr ybw v0)yma8z8 /zng through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, an8vmz0)b vy/wraz)g8 yd 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 travef.3dyp6 ghk,fling through thrkh ffy.36g,dp ee 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 trav n: )urra8eigk75. ntt9 8cd)stimg(leling 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 vjg4mas o7/.z cfsft- wyr-4+ the surface of a rectangular block of glass at an angle otrj +vzof sfg.74-/4yswc- ma f $45^{\circ}$. 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 a picd78;ucntrg *tw9ii 4ece of glass. Wh*n4tig; r7t98d cw iucich 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 ge0vdqh5 -xrh* -d ho- z,y lw5)ws-bmqlass 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 of the light after it exits th -ydhm 5r -zv-wwohd,qbehlq-)s 0x5*e glass?