11.24: Two wave pulses tmt a: m.ic-ci3ravel 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 the pulses when the cei . m:a-ic3ctmnters of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a p7tkig97q-m p x*.0/fcxwxm h+xylc1slastic block. Which pair of1i/7xyxxc c0w p*m+ qs tklh9g.7f-mx statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight dow/w o zd7 b7cc:5ccooc6nward through the point labeled B in the diagram shown. The ray reawccc/bc:5o6 docz o 77ches 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 reflection oc/r51irfv:ara l8 bq/scurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while standmfq1 7bsq/6 kting in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mi1kt/qmq 7f6bs rror 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 direction whe--xl xb8yyiuz/3ns3 d n it enters a new material. Which one of the following choices is the ib33z xnl- / y8sdy-xuterm best associated with this phenomenon?

  96.19: Light that has wavelength ok9mefuz 8z5(q jha; yj; /b6akf 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction hjke(a;bu z9aq/ fy;jz68 5km of the material?

  98.04: As sound travels from steel into air, both its speed and its:oavx*yd lq(6 -

  00.01: As a wave moves from one medium to a secons/- lutg j0g3d1a +e1k0rtt wwd medium with a different index of refraction which of the following r 3ts1jt0e0+l /-utkwwg adg1wave properties would NEVER change?

  05.47: A sound wave ge/q uvkyvby:k*e m,( h*nerated from a tuning fork of single frequency travels from air (with s:ubk ,vmq/ v**(eykhypeed 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 placy/;u86a c81xaxw gwxjed at the bottom of a swimming pool emits a sound wave that travels toward twaxgxjxaw;1/ 8c y6 8uhe 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 white light strikes a rectangularj)+6j-s e (nkamcn t7dql 5+uurps7.y glass block with an angle y6ju . qsn7cjld u5+et+ar)s-(p7nmk of incidence 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 bgs ((weom7:f p ;jw+vnoundary as shown to the right. Which segment best represents the refractfw7gp(j( s+eo:;mvw n ed ray?

  98.17: Which diagram best represents y 0wxf)(,) c yzty 5edogqi)b7what happens to a ray of light entering air from 7ey50 ogq iy,)cx fb)t)wd (yzwater? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle mx+ z:mal;whuj8:4prof incidence for which the luh:mjmx wpa:z8 ;r4+angle of refraction is:

  95.12: The principle underlying fiber optics ia+(g g3 sg.nj7it) wy3yhi m -dts/p5vsbz53os:

  98.36: The critical a 4g3adho65 hqe3 ;.hp8lw vkpvngle in a transparent 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 inx3qu5 z:yodmc* 3f yusx gw.,+olq7i:dex of refraction of n = 1.5 to maxqyuqz iyo :7 xuw ds5 l*g.:m3,c+of3terial 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 X?

  03.15: A jeweler can distinguish between a diamond and a h3: g;4zmy lagpiece of glass by observig;4m3y: gahz lng 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 material v:ooac34x-mt. When the light makes an angle of incimvto4-ao:x3 c dence 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 +5l(cbe ci;mv+ga;a4gjx6,n)o iw m lis 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 vaigj; l6 m) ia5m4l+ng+wcc,eo ;ba(xvlue of n is:

  95.31: A beam of light passes from medium 1 to mc6.in zj9 sjw72du,qnh//ssaedium 2 to medium 3 as shown in the accompanying figure. What is true about the respective in/as zn/qhjwsin 92 .dcu7s,j6dices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to e4h+wcwsg 28y vr4.dymedium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of ryy e4csrd4w2w h +v8g.efraction, n1, n2 and n3?

  97.24: The accompanying diagram soc5:m5z) f,dl , ejorxhows 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 thel f: o5emod,)rjxz5 c, relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic +h zi*1 ea4pvtlight ray traveling through three media.The syapv4 *1the+iz mbols $v_1$,$\lambda_1$ , 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 glassxqo:;u 6g3 uqb ($n_g$=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 incv:o 2v6 ybveh(yw a;c+ident on the surface of a rectangular block of glass at an angle+ 2 ovw;:bc (vy6yveha 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 mx0,+oxtuzi 6w )-xs/tzu1 gwis transmitted from air into a piece of glass. Which one of the lazw1t uux,g ow0x6tms+x/)i z -beled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic mdp)kci9 q(1brihb. 5light 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 lettered rays shows5()ph9 kc d .ri1mibqb the path of the light after it exits the glass?