11.24: Two wave pulses travel to the right toward a rigid boundary as show 4; 154xd9h,yddpd ohe,1fw- ji gjpvpn. 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 c-dppov 9d4hp11xgj f, d,5ey h d;wji4oincide?

  08.30: A light beam passes throug v( 1(z 6alec7icow8exh the air and strikes the surface of a plastic block. Which pw(cxe l1i aeo78(zc6v air of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes69ml+ut(we u qe9 w4hm straight downward through the point labeled B in the diagrqh (tw9ul64eu9 mme+wam shown. 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 reflect7bczxh2g8 *jxion occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head s j4;3nmpd ch7a nlqg8k th54.while standing7sd 54q4 8.np gc;klm ahhtnj3 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 head how far behind the wall mirror?

  14.25: It is observed that a light ray changes u( ms0w c9ppgac7a mih9,.v(hdirection when it enters a new material. Which one of the following choices is the term best associated with this phenuv 0 spc(ac9m.mwphi7(a9h, gomenon?

  96.19: Light that has wavele *yu;i mssvgp;af b 2h4+/c8dkngth of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the mat2y; m psfav ichsu/; +*b4g8kderial?

  98.04: As sound travels from steel into air, hbm;)uiq9 p) dy *zjqyf d6w59both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different i;1d2vb lq+yu17v thb ktro( x:ndex of refraction which of the following waveq xk b:to(udbv rl2h;+7y 11tv properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequetkf 6 utl 05gsd))mmml9dt0 0kncy travels from air (with speed of soundgl 9tm6k5mk 0mtdtf )s)l0u0 d 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 7)ah.9amy5bhg 9v )cm1 ovj8qrpqb( io0i z4pof a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a frequency (oha.q7vvapg)b9m jr1)9qo548ymbpi 0 c i hz $f_{water}$, 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 rectagbi5nbu2 g0e 8ngular glass block with an angle of inciu0n5 gbb2 8igedence 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 t/eqg u: +n6iqv0ua3la gu ,o-joward a point P on a boundary as shown to the rightu q-agg:auq3 ni/jv+, 6ul0oe . Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enterin;nuc jis4;3 ;g dy:3 *oyi,oaavdqh0ng air 4dyay3gj;aq odn;30 inh;:sc o, vu*ifrom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle o 4mfmxiy9cvn,otb9 0p89q, 77 v kdrdjf incidence for which the ang jbdm r op,,i8 yq7mvvd7k 940xnfc99tle of refraction is:

  95.12: The principle underlying fiber opticr4ib2+q o2vrtyhi m; )x aj.g:s is:

  98.36: The critical angle in a transparent mocjo n v0id)h,x:k ((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 = 1. gl3w/q w jqtu+6wy)2y)cf1 kz5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v,j uy3l6fzgtwk 21yw /cwq)q )+ what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a pie ouvf0 g4-w c*ul23phryl :7kwce of glass by observing the critical angle of the light in each material. Glass with an -3l*r g 24:ofupylu0wkcv7wh 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 light makes an an) uf6;s:g-hgslp 2ijyi)iv3v gle of incidence equal tvjgvh):)ii3l gp f2i;s6y u-so $30.0^{\circ}$, 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 sfallftfr , v.b,3de7:q4n*l index of refraction n. The ladtbfrq4n ,7fa,lfl: vl3e *.sser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from mediumyya )nq2j nzlq*fh*:;o +zmt, 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and nzo;t+2 mlfz*,n) aq h:jyn* qy3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown idk iqd-o udgr*g fl z 0fo7gns.*--grs;:0i0 xn the diagram. What may be concluded *7rlio-usif. d*;sd - :gq- 0gzkrg nox00gfd about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyim4 lwei)-h1e; 8o1j n)ocjrulng 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, respectively. Which of the following best describes the relation between the indices of refraction? lj-wu 8c)rej41eln hoo1) mi;

  09.34: The diagram below shows the path taken by a monochrom5 i07t +picsyy 4d6ecsatic light ray traveling through three media.The sy i5s64pcecis y+t70 ydmbols $v_1$,$\lambda_1$ , 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 gq;i4k c;ofb q*b hsg:4p0gd/tlass ($n_g$=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 rectangular block :+mg obd f)bn m0c*cx3q0f ze.of glass at an anz)bmd qfnxm0e:c.cfo* 0gb 3+ gle 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 a /d.* m uevadz(ti+gcz-3n/w rpiece of glass. Which one of the labeled arrowu( zz-w3td a.md e//c ng*r+ivs best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic lightycyso ie/mtrgm3x1qi// 9l: +oh 1km0 enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the oyc g / s/mx io1/mk09:qmrei3t ly+h1lettered rays shows the path of the light after it exits the glass?