11.24: Two wave pulses travel to theq ( fin6:xf: w /,7dm2nafzvlo right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfef/w7ifd6 zq,:l n2 m fovn(xa:re. 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 passes through the air wz*nldpu s l7 wx )mtxy9)98*qand strikes the surface of a plastic block. Which pair of statements correctly describes the phase 7mp8y w*dq)ts )x9 zxl*lw9nuchanges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight dowkbz ;*) wn)r-kzftnr1nward through the point labeled B in the diagram shown. The ray reachfbw*-)znzkr;r1k n)tes 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 occurs whenever light is incid3vl*i jc,q3t1c5 zph dent on

  05.18: A student hold a hand mirror to observe tom409 t)ylsdbo s+n8 ohe 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 head how far behind the wall mirror?d lb8n)9om40o ts+s yo

  14.25: It is observed that a light ray changes direction when it entfkzp6xaf ./ffs67r4gers a new material. Which one of the foprg6f6 k74afx /fzs.fllowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 5009oj5hip5n dq( nm in air has wavelength 400 nm in a transparent material. What is the index of refraction ofd55p9o(q hj ni the material?

  98.04: As sound travels k +5jp xpvl:( lrek03vfrom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium utx4c5qa4(g7l +d mwawith a different index of refraction wacdw4mgt+au x54 ( 7qlhich of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequ8w(ktrcddza;p alt0og- 5s, :ency travels from air (with speed of sound 340 m/s) icda5ok:t 0w 8lz;,ag pt(d-rsnto 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 pool vkzkl .i5oyj.t8i k-(gx-.c ht9g )blemits a sound wave that travels toward the surface of thj-t.(khl.ivk).tilbck9y 5 g z8-gxoe 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 whituv5v j7tvq40q *l5wmte light strikes a rectangular glass block with an angle of ivwjmv*ut t5qq5lv70 4ncidence 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 boundary as shown to+ei cy, ea9e9rkjv9/ i the right. Which k/jci,e+i99vrye 9ea segment best represents the refracted ray?

  98.17: Which diagram best repres n. wu(r:osd1f lq2y3glg-lq9ents what happens to a ray of light entering air f3lfolys:-q gd.rn gu l9w(q12rom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence forsmu( et 68vha6 which the angle of refractta(smv 668hue ion is:

  95.12: The principle underlyin+ 7qez vj11/ngo+thimg fiber optics is:

  98.36: The critical angln(,6jgdc*x-oyz f is;e 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 fg1qh74l - q 0wahvtklbvv,2w; rom material X with an index of refraction of n = 1.5 to material Y with an index of regt0vlwq4ak2 ; w7-lq1vbhhv,fraction 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 piece of glass by zn sg.nq)0 2ho;rum/tobserving the critical angle of th.mq n)gtoz ;2rn/ uh0se 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 thy0fz41o semt,e light makes an angle of incidence equ, sze14omyt 0fal 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 ,tg wo1xhk1.vmaterial of index of refraction n. The l 1kx gw1ohvt,.aser 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 medium 1 to medium 2 to medk cb x54m:n8ur x)+xysium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1,xcxy ux5 kb4n:8+ mr)s n2, and n3)?

  00.14: A beam of light passes 4 fz3uslkf:kjkm b 47o32(s uefrom medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refra :zjm7fbko2e3( 4k flkuss3u4ction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takgxi( 6-ahn3zc otnq9lwz* b k-+y2f .ves passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the foll- tfvy+ gi k -3n*o(a6blznh.zw 29qcxowing best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a mc* m8kcwj7i 9ionochromatic light ray traveling through thre87icji*k wm9 ce 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 1h7. m2jk iuyptraveling 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 the y1ag4k :ke ja,surface of a rectangular block of glass a:,4jk1y kegaat an angle 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 trabyv-*)fr 1yeq5qv+ cnwls p6:nsmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it entqe1lc+ v*6-y:5y vnpfqr ) wbsers the glass?

  14.44: A ray of monochromatic light enters the rigxd kp(++f;i/ sguha;uht-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 shows the path of the light after it exits the glassgsu ( f;/i;a kxh+pdu+?