11.24: Two wave pulses travel to the right toward a rigid boundary wjes3f7 /( xwcas 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 center3ew( x fwcj7s/s of the individual pulses coincide?

  08.30: A light beam passes thrt 9ir53;tabxj9s oh+ ; auatl9ough the air and strikes the surface of a plastic block. Which paix;9a+ la9;i sthua obrjt935t r of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pasryx,l /ekk . way/pq.+ses straight downward through the point labeled B in the lk p/q/yx.ea,+ rkyw .diagram shown. The ray reaches 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 k1-q 2n6oy)gy sedz/e incident on

  05.18: A student hol(h-r1 umpzi; id a hand mirror to observe the back of her head while standizm-;p1hu( ir ing 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?

  14.25: It is observed that a light ray changes p-xdj129-5c hp bjfzg;.i-r 5pmxxvvdirection when it enters a new material. Whic. pxg-5 hvm5x-;jjcfb2pirzv91- dx ph one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has w49o(o 5 .nysneqgi h4tavelength 400 nm in a transparent material. What is the index of refractionnq4ey.t4oi 9h (5sgon of the material?

  98.04: As sound travels from steel int9 lyb 5b14g*y63-uox w6fgzkyge oel 0o air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with7ph; w-j-op2d +t ys8 wxood;r a different index of refraction which of the following wave propertot xop-8 dshd;-o+2 p7 w;wyjries would NEVER change?

  05.47: A sound wave generated from a tunin dr.ed9gh21i zg fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequenz.ge d9d1rh2 icy of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bb4bns :t o:lt9a0ho,uottom of a swimming pool emits a sound wave thatb ob,l49ahu tn0so: t: travels 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 gla;xyid:2y.z l8evt1j jss block with an angle of v.le xdzi t1j;2yj:8yincidence 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 poin; 4lijx5-y5x vjn6rte-8 nuwuz xs0lgz -d4. gt P on a boundary as shown to the right. Which segment .u4z grn0;s5ijxj 6-y4ezxdlw5u 8t-v lx- gnbest represents the refracted ray?

  98.17: Which diagram best represents whats.cyo392v hlo2 c9j ta happens to a ray of light entering air from water? Air is at the top in all dia jtc.hl3ooy 22 9vs9cagrams.

  94.11: The critical angle of a material is the angle of incidence for which t+f2 omxmknaw,1a o ne3v2*52 m.fvdy qhe angle of refractiono*25k1nq,mvxam f2ve2wnfy ao +3 m .d is:

  95.12: The principle underlyinga gyksj u fzoi/ pf,q*2;-ldp7 c-k12c fiber optics is:

  98.36: The critical angle in a transparent7 c5 sd .5kctv rv7naxzo:+ll+ 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 refraction of n bd-1 oj66uies+i)r-r /l s iud= 1.5 to material Y with an index of refractiuu/b)j s+dsr liio6-r- ie 61don 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 s ad7puqxa8kc-x8 xa;j 5s ix*758zn oglass by observing the critical angle of the liqda sa ;ni58cajxu* xz58x87xpks7 -oght 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 light makes an anglvj l 8lj0u 9pv9aam/uttip:75l :x6 vle of incidence equ90: laj lt:76ujp5ltv9vpvi ux/ml 8aal 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 iyoj(wk0gj 3 udc1h )f8ndex of refraction n. The laser beam emerges f)cu3 jgdk hyw1f0(o8jrom 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 medium 3 as 4p2r ru 67tlybshown in the accompanying figure. What is true about the respective indices of refraction7blr turp462y (n1, n2, and n3)?

  00.14: A beam of light passes from gbofyje5+kl,wuh + i 0w1 vbe) fx:p4(medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the 5+w wp1 0) x4eufj:(ohv eibyf+,kglbthree indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows e, j6ydop/b(zdw-tthfe8 69f 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 the relation between the indices of re/ bhtdtj,d6p f 9y 8e(wf-oze6fraction?

  09.34: The diagram below shows the path taken by a monochromatic li fe8g8p (q5wyeght ray traveling through three med858qwey( g pfeia.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 in gl mb/f:rhsamdmp2l 4*idxx. (2ass ($n_g$=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(uffqdk6.qd; y x0a( cxuhq :xp8l. y/ surface of a rectangular block of glass at an a f../xypdy6(ql8hxku0 cqd ;a f qu(x:ngle 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 transmitted from arg+i5-kvft :go1qz /y ir into a piece of glass. Which one of the labeled a5 vkgz-1y+tg iof:r/ qrrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-tridr7glxazhid;uin:y0 7yq).5 angular 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 pay07)yd;r.iq7nidg l5zx:uh ath of the light after it exits the glass?