11.24: Two wave pulses travel to the right toward a rigid boundary as sh(vq1wtb oz) e5ni1ch* own. After reflection of the triang1 i t*1wv5zne)q ho(cbular 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 passest : twlg:,sz2l through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase change:wzg , ltt2sl:s for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point la7g/g m0xk; f.gejcbp:q gqt(7beled B in the diagram shown. The ray reaches a flat mirrggp tbfmg(gexkq0 q:c/ .7;j7or 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 whenever ligfp:hjd5 favs* fc(q-0q8)l,ibg +rql ht is incident on

  05.18: A student hold a hand mirror to observe the back of her head whs dvt/ee y il/w5: )f;qj5yg/pile 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 hers//f5i e;ydt: vp ge5yjl /w)q 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 direction when it enters a new ,zh+hjawl e ( pigo:(7material. Which one of the following choices is the term best associated with this phenomenon? g(eah7:ilzh pjo+(,w

  96.19: Light that has wavb 2 nu+6 bq dyb:yo;(phi*p.cgelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refro 2bh pbq*c.d 6y+;yu(ig:p bnaction of the material?

  98.04: As sound trav.bgku o .ew7 vfqi9pfjy fe-):/:v -ldels from steel into air, both its speed and its:

  00.01: As a wave moves fromabixkk5;pq* qn78qm1 i4 ylb9 one medium to a second medium with a different index of refnbyl8q*x7m ikq5k9ib ; 1p aq4raction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency trc:, zp 0yx ei9imx,i;xavels from air (with speed of sound 340 m/s) into rock (with speed zei; i9m0xxc,i ,yx:pof 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 pool emits a s/e5lo.+m el yround yerl+me o./ l5wave that travels 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 w4 ,u 9nra3iaxazey;u +hite light strikes a rectangular glass block with an angle of , r4ai;e 93uaazyxn+uincidence 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 amgcb/dw2pot+w u/m; ux5m o3 /c*5ybf point P on a boundary as shown to the right. Which segment best represents the refwy wuc3/ m/5 m5;pcmo b +u/*2xtbogdfracted ray?

  98.17: Which diagram best represents what happend)pp7li81;ox;-6pe h do0w 3l szszf+ qkgwx7s to a ray of light entering air from water? Air is at th si ;1slkg8odw 7pdpqe f7x)+z-pwz3xo60l; he top in all diagrams.

  94.11: The critical angle of a w5 qdzuor9)fz;,j 9qeo3nu) a material is the angle of incidence for which the ,rq;fzdwzu)59n oj) ou9a3e qangle of refraction is:

  95.12: The principle underlying fiber om9qpm9*ivtg1:jh++l j p,xceptics is:

  98.36: The critical angle in a transparent substance surrounded by augz+*hjd s5/yf;kjf , ir 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 qb03r qole13 1kz f5e: rp hzo)l)lu.mrefraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material ku 3 1h))3rzfr50pm.ql llo1bez qe :oX?

  03.15: A jeweler can distim ge )as 0y1g43mf(bfcnguish between a diamond and a piece of glass by observing the cmfc)e (f gsm4gby01a 3ritical 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 material. When tht -7xlwjzr4*ie light makes an angle of incidence lxijrz- *w74tequal 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 c2dw) bsy. zkb/u9f z.embedded 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 of the laser and target. The value of n )f.zs9./b2 byudkwzc is:

  95.31: A beam of light passe+6kj mea6n8/u o5 miacpr,gqj:s r +u/s from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indic,krnm r5u/aqc ge+i ao86j /s6 pj:u+mes of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 asbh8yce zbti-; 3x7:oj shown in the diagram. What may be concluded about the three indexes of - yijcte8hobxb :7 3z; refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light odr-qptgmqvvkld- .0+ dj88/ ray takes passing through three transparent materials. The ind.r dv8 op0qjm+/d- 8tgkd qvl-ices 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?

  09.34: The diagram below shows thmcf1one* gz)/ x)br .r p8j.r5 bux0mte path taken by a monochromatic light ray traveling through three m 8.cugm z.pxr1jmbe5/fb r0r*x)o)n tedia.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 traveling in gl cvlle- w2,4ujass ($n_g$=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 (,kb:1g z9k lsd j7byk ,+tmvf*w6t pd of glass at an angle o (6wtmdkdvly b:kb ,*tj,+97p gzk1 fsf $45^{\circ}$. 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 piece of glasshtv (cq ab8-t5n bcl/6. Which one of the labeled arrows best it h6ncqt(bc/b-v al5 8ndicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic lightqk7e887 ftq6s9vbfu a enters the right-triangular glass as shown. The glaseq67s u8a9fbq7 tv8fks 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 the glass?