11.24: Two wave pulses trybi tg6upq --(mfe+s.avel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will igey-usq(b6fi mp-+ .t nterfere. 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 p 0no-u vjrc1fx m26zznf69p3 dasses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes-f3 2nx0d9fcvpz16 j6 mnuroz for the reflected wave and the transmitted wave?

  12.02: A ray of light passes strai n-y erm:h8t1z9vbv h.ght downward through the point labeled B in the diagram shown. The ray reaches a fl1 -nm8e.9h z:vrybhvt at 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 reflectionh0gxu(8mf+c y occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her hebmq. ,q2izz ,/3hel hfad 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 head how far behind th.zf,q eh,/2biqmlhz 3e wall mirror?

  14.25: It is observed that a light ray changes dxyvk9y,/ut o: c35y3r(8mnv4kals ynirection when it enters a new material. Which one of thlau4 smvyyxo9k 8/( rkyt:cn, ny3v35e following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm inf6rqf93rnh 1o7v gyy2g yevrj7) 6, km a transparent material. What is the index of refraction of th7gff y qvrm hjr7y6k3ye6n r9gv21),oe material?

  98.04: As sound travels :vt q)whghv)7 from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a secon t)r9-ztms)e td medium with a different index of refra) t me)t9rtsz-ction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of sini+lz*svcq 8t5gle frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Wi5*l+v tz8csqhich 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 o1dg mj38il-7v 7dbty -)crs spool emits a sound wave that travels toward the surface of the water. In the water, the sor8c7- ioj 7dsvy bgs1)lm-t d3und 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 rectangular glass block with an a5( x immzms2-tt.b1fk ngle of incidents(m k5imfb- 1 xzm.2tce 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 boundaryk ,ool1 yih1019v zrzu as shown to the right. Which segment best represents the ref9,z11y0 1lzvhi rooku racted ray?

  98.17: Which diagram best repres7 n;8ml1imbiq ents what happens to a ray of light entering air from water? Air is at the top iqi1lm8m b; in7n all diagrams.

  94.11: The critical angle ofi2bah;fq1 2z(gb 6m1wwz kd y, a material is the angle of incidence for which the an1y; wbizz2ga2f mhqd (k6, 1bwgle of refraction is:

  95.12: The principle underlying fiber optics a8uc5 -xxot 4dis:

  98.36: The critical angle in a transpar 6m;*ewgy 2pdwent 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 refraf:ks 1nml2yo o7p el*7.g orm7ction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in mam:s7m 2 7f.olerol1n *kpg yo7terial Y is v, what is the speed of light in material X?

  03.15: A jeweler can distin 1g:euaj/lz 8vguish between a diamond and a piece of glass by observing the critical angle of the light in each material. ej8z:la1vg u /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 the light makes an4gv)jcwz39uc;3hvrbt5( n dy angle of incide4hd)(3rb z5cvyw9ju;c tnvg 3 nce 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 is embedded in a material of index of refraction n.raqir4c7q 5xg 9g374cyop k5t The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of tc ga 5go cy9r7qk45pqxt34ir7he laser and target. The value of n is:

  95.31: A beam of light passes :9ruvl 8qqnzu6q2b9cd s b,g;from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true d;, q2vq :9sgnul69rubqcb 8 zabout the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes fromfs/dk) 31d fl lhv*e,p,hdpa :r :bdn* medium 1 to medium 2 to medium 3 as shown in the diagram. Wha*pd)s1dpdra/:fv, , e: dnk3bl* hlfht may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light t+pgoyv9mr(n1* ; walray takes passing through three transparent materials. The i9*vp+1 g roatnwly ;(mndices 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 thbq et1iz3v*p.e path taken by a monochromatic light ray traveling through tzbqiev*1 3 .tphree 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 traveling inyuo.n qs01x* m 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 e1e vd+ jl+z5;iceo(y; nwe/yincident on the surface of a rectangular block of glass at an anglye 5 ;i;zw/v eo+yn+l e1ce(jde 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 trf-hv0ql p0f+ mansmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray aft0q+-pf0lf vh mer it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glasssi c)rne 2+y)g as shown. The glas i+) ecsryg2)ns 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?