11.24: Two wave pulses travel to the right toward a rigid bkon* .ma c/jvkg1 /wi;u a(.bvoundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of thev(/ v.ck *mw;bnjao1ugk i ./a pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a pl2o-q-ye 1enh* szqwi+ d jxkzuk :s:*,astic block. Which pair of statements correctly deskq ,u*n-zeoedjiwssqz:y h 21+*:-kxcribes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes stra(. d-pfpqusn,bbpg(mbk 748m 7 z(n uyight downward through the point labeled B in the diagram shown. The ray reaches a flbp((bk zp , dnmup -g4m877bns.(uyf qat 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 occv ivq 94;du7+j:en+hfxeq-zr urs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head wh(y/l;)f24ddh oh ak9 /gvsmy lile 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 heyhg(;ad/l k4sv lhf2y m9)o/dad how far behind the wall mirror?

  14.25: It is observed that a r tw)s5k)7 x2kgds)kflight ray changes direction when it enters a new material. Which one of the following choices i5rs ))k7 xg swt)fk2kds the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in 0,.cg u9z sdaq zg5lnbn) a4*dmda1+kair has wavelength 400 nm in a transparent material. What is the index of refraction of t l05ngazqgda*b 9csd muk,4+dz.) a1nhe material?

  98.04: As sound travels from steel into air, both its speed and its:q. hqz., 0hbbpjk/oix2 ojg 9+1am*t fi9o a3b

  00.01: As a wave moves from one medium to a sdt8* wkxa+p0necond medium with a different index of refraction which of the following wave properties would NEVER dak t*n0w+8 xpchange?

  05.47: A sound wave generated from a tuning fork of single frequency travels fro. 3/;euci5i.om mpdedm air (with speeo/ ui. .5md3ep em;cdid 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 speak 7b(sb, jfgw+per placed at the bottom of a swimming pool emits a sound wave that travels7+pg,fj b(wb s 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 white light strikes a rectangular gl(j.1;eaw9)c /u neiz q4knlq bass block with an angle ofj;/b q)4aezuncilek1.w 9n(q 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 ta*c/)y-smu7hja mq6 j oward a point P on a boundary as shown to the right. Which segment best reprem )jac/-y*hq7uasmj6sents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enterinw5k/eur :q l8cg air from water? Air is at/u:5qcl8r ke w the top in all diagrams.

  94.11: The critical angle of a material is the angle of incimmz4npz eomqoy p-3t)5h-hm3xn g go26nh41;dence for which the angle of refraction ;m-omzgpq3hgxe- yp3hnnt21m hmz4) oo56n4 is:

  95.12: The principle underlying fibel+(fl 2gpug xy0+ 1exjr optics is:

  98.36: The critical angle in aaf(zkx, 3 m6ktr1tf5z 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 witht:- yxb0aa a:r an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of yx0a:b at-:ar 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 )a;7y tdht8 bjkco: qnzw,7v1observing the critical ang;adb 71tjnwochy,k:7 8v)tqz le 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 lis/;w p7syhn 0 :y0gaphgq.f; dght makes an angle of y: ;0/ yhf;0swqpga7hs .dpgn incidence 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/. fui,ktlk 5d* uyos*6me6k b of index of refraction n. The laser beam emerges from the material and hits a target. Sekl /. *bi6 kfomu*s, 6dk5uytee the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light pbtz5ghb:d( n7asses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. 7gz d(h:bbnt5What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mediumibenimi vj ku 92j(-0+ 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1u j+ i2ki(en -vi09bjm, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes pc 1rftaavy 8q ;5k q(hf+r;l;qassing through three transparent materials. +85cq;qrk1r; atvffah ( yl;qThe 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 monochrom+u ooykm8)h5xqk7gp0 atic light ray traveling through three media.The symb7ughp0+kk )qo o 85xmyols $v_1$,$\lambda_1$ , 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 he npuji27 2imd-yj,cef f:)6ws6 f3k 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 surface of a rectangular block of glaswe)ytqcn78 a. 3)nbuw s at an bc an w )3.7n)uw8tqeyangle 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 trdwa;myl0 c i*5ht3dy6ansmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path0yd6m *i y;wa d53chtl of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the *f:9w,slv seuright-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 aftervu*w9 slesf, : it exits the glass?