11.24: Two wave pulses trt 3ghy7,( k 6e8r+g;rcuvim +fe fguu7 o+y8tmavel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulsesut f mgf3u 7v+yuekoc8m,8g+tgri6 h(+e7y;r 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 passes through the air and strikes the 7gmqjfj0g4i n(.da7 lsurface of a plastic block. W0 .gn7a lg(7jjf4qdmihich pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight o8k xaopv)*g1downward through the point labeled B in the diagram shown. The ray reaches a flat mirror place xva)p1og8o*k d at an angle $\mathrm{\Theta }$ 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 reflectionbbeponj- q+-fmbk-*828dtxvn e e*2 w occurs whenever light is incident on

  05.18: A student hold a hand mirror vu6n66;tw+ 4g/zeqgrz cgt;rm ,2wkf to observe the back of her head while standing in front of anve+n u4c wg;6zf2t6;g rzmktg6,rw q/ d 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 direction when it enters a nm/3ft7 (zxx dbew material. Which one of the following choices is the term best associated with this ph /(7f xxzdbmt3enomenon?

  96.19: Light that has wa.d 0:wtuhz (ygvelength of 500 nm in air has wavelength 400 nm in a transpareguy .d(zwht0: nt material. What is the index of refraction of the material?

  98.04: As sound travels from1) y1 x*tgw tbl0hs.jq steel into air, both its speed and its:

  00.01: As a wave moves fromffga(tt )yrhe 2 a.0y2+nva3v one medium to a second medium with a different index of refraction which of the foat 32+vhg t.n 2v0ffaa(yy)e rllowing wave properties would NEVER change?

  05.47: A sound wave generated from a t(99jhql lwao- uning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). ao lhqw 9l-9(jWhich statement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof vds ,. j, dy;c9hbxkt5speaker placed at the bottom of a swimming pool emits a sound wave that travels toward thht,;b9c x, .yksdvj5de 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 rectangular e.xrept lf48 e+p5yo -glass block with an angle of incye o+ltr5-fpp4x e.8eidence 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 bmn,j25 al.lqa5 ft k(directed toward a point P on a boundary as shown to the right. Which segment best represents theqnk.tj5fll a ,2 abm5( refracted ray?

  98.17: Which diagram best represents w1vskk5is (bc +0 icj/qhat happens to a ray of light entering air from w+j5ks/k bv(qi0 si 1ccater? Air is at the top in all diagrams.

  94.11: The critical ar7(t1k*)pp reirs(i nngle of a material is the angle of incidence for which the angle of refraction(r pnit17r p (*krei)s is:

  95.12: The principle underlying fib hd5zbcir: b6m6gl:n 8er optics is:

  98.36: The critical angle in a transparent substance surro vu pl/a/zuf2:unded 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 refraz b tl3l-b21wfl aox92ction 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 olll 2bb2 azwf-x t193v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond ae3a)dd dk+7fxnd a piece of glass by observing the cddaef3 7 )+dkxritical 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 the lig d4crin7 xooz 2kub2:.ht makes an angle of incidence equal to kiozrn :d72c2xbu4.o${30.0}^{\circ }$, 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 rj3hr gamo(n3g 2t3m* 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 *rh3ro2m jt( gna3gm3is:

  95.31: A beam of light passes from medium 1 to medium 2k.qs m, q5xv3h to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and 5,vkq.h3x mqsn3)?

  00.14: A beam of light passes from medium 14ez4al1 uso0 s to medium 2 to medium 3 as shown in the diagram.oe0u4 sl4 sa1z What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes psr3g36toaw 2 v15;nwm :ztle vassing through three transparent materials. wvmg 3ntl5o1stea;:6z2 rv3wThe 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?

  09.34: The diagram below shows the path taken by a monochromatic light ray traveqiydh4jvj 0zo8rocu4pa1az9 c 5i:, 6linjz014 zcocva4:ihdr ay, 6upo8j9 5qi g through three 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 qrvpa/9 +cl.t traveling 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 surfacu4 - i1c(dx mhotdp,s;6 tbd,lhph: c;e of a rectangular block of glass at an anglecoi4-6x;(ppls, t1cd;hd dub,t : hmh 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 transmitte hz+w52pj3rgr e o8xlkbm:ec d2)n0.kd from air into a piece of glass. Which rbkhl23p8 o.ze) 2n:kwgdmx j+0r 5 ceone of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular/yaoo. fwhk7c5c 4o9u 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 thefc/o7wa o9c4o y.uk5 h glass?