11.24: Two wave pulses travel to +mu8sc3 p ,ik/; ovgcuthe right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of thmkug ;3,cscoup +vi/8e 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 th9 l5+-j xf9fhgva uk :mfou80he surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?h5v+um9 f8kfjg uo:lfx 0h-a9

  12.02: A ray of light passes straight downw7, 7m/dbgp1nvhb rxh4 ard through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at a dxr7h gmhb1/bn,7pv4 n 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 is5.n l4g ;dakzq incident on

  05.18: A student hold a hand mirror )fj (2kdfkg (pdkq .-yto observe the 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 mirgj(yd f -2kpkdk.()fqror 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 6+frwt oq/; -0tztn hlmpm4 aelka.)9a new material. Which one of the following choices is the term best associated with thimt+ k 4aq/.-lp0f zeam)6hno; rtwlt9s phenomenon?

  96.19: Light that has wavele+lu bdtr 3tf ;7hsv7+hngth of 500 nm in air has wavelength 400 nm in a transparent material. +vths d7 f+7rlhbu3 ;tWhat is the index of refraction of the material?

  98.04: As sound travels from steel i-t/p-:sm:.f u7 *o jpmjarth6x (obexnto air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different indexh,*w8d*5 fwy zj8wjcb3 gma8 i of refraction which of the following wave properties would NEVj8awjbwhi* *5c fm8 y3w8,gdzER change?

  05.47: A sound wave generated from a tuning fork of single frequenc ofss)03 l2jll:b qqp5y 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 j0 :olfsls2 3bl)q 5pqand frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a soukvvyf -e2zu :j c6zx,s2 )myj i4(l/fund wave that tf6l vy:2fv z )/,k-m y4uic x(jzeu2jsravels 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 recta8rg97m7.w 1qru eyyn cbcqr6p8ppq3+ ngular glass block with an ang8enb +pp3wrqryqymcc69u .77g 81rp qle of 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 toward a point P on ahahv/j h.thx4 u .c::tm/fvq5 boundary as shown to the right. Which segvah c.5qf:4vx/hm :h/. tjuthment best represents the refracted ray?

  98.17: Which diagram best represents what happ rrag;85oh7y27n lys 4tek ) wc-vzy1rens to a ray of light entering air r-owvr7 z kl2h5;1ner8ytay s7 4)y gcfrom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is tdna5:z9 wl +x.al1zv:de3m kr he angle of incidence for which the angle of refractionnkx3d r:9lme5z w ldav1.za+: is:

  95.12: The principle underlyi 1diubd (kkl80ng fiber optics is:

  98.36: The critical angle in a transparent substance surrounded s3l3y 4mgc(zb+ bpl6bby 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 refrac6jsh-z .yc e egfn 0yi+8xn5a5tion 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 v, what is the speedc5ye y 60a+nnz.g8f 5x-ijesh of light in material X?

  03.15: A jeweler can distinginnm zi kn9,c 7z97s.erw5i;suish between a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a crszzcn i rns997nki5., m7w;eiitical 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 int6d0juyctaz8: q1 m b6rh n4qg(o a clear material. When the light makes an angle of incidence eqq 61 tjau(qnhrdcz4gmb8:y06ual 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 q/f1xr v b1lvr/e y94hof 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 targetf/9vhbxv1 erql 4/ yr1. The value of n is:

  95.31: A beam of light passes from mediumuzfh*/ ca7i5ya 4ur x+ 1 to medium 2 to medium 3 as shown in tz7u5u/+* 4raicx ah fyhe accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from mediu qw40j9hwrmg a.pl6(cm 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of wh .arc0lp4 (j96qgwm refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lightuxe6z g nu3*b* ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, a3e* uunz6xg* bnd 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 monoc , 1 oq7hgx2lg(1inkze*gylg.o qt;; nhromatic light ray traveling through three meeqoxt1on.h7 kzi*n g; ;yglq2l,(1 gg dia.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 glasfu ytsb,v5gps 6.jp) ,s ($n_g$=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 incidentqg 8u,zo 7o 88rhom*mb on the surface of a rectangular block of glass ato b*mh8g7z8qmo,o8 ur 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 transmitted from l47b:p, 6upvk x mxum-air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it en 7pb -64xl mmpux:,kvuters the glass?

  14.44: A ray of monochromatic light enters the right-triangu).i/g nzg0i j)0 .d4dgmtjvxl lar glass as shown. The glass has an index of refrdi). nj/0v xgz)g 0i4m.gltdjaction 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?