11.24: Two wave pulses travel to the right toward a rigid boundary k (csegu1*3mm1 cxii4as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superpo1mc3smei *xik4c gu (1sition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air anaw;40yyuj s9 ,znpzs5 d strikes the surface of a plastic block. Which pair of statements 5nzwsa09j ysu;,pz4y correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point lab5k;v8:g a 5lv0n/rrke tqi)cfeled B in the diagram shown. The ray reachesrc)ka 5vt:i5;e8 n lq g/vr0kf 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 reflecto-6ko-u+(k) z d -av:6 usmnbv8it gtcion occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whij5-c:mzo c,ry le standing in front of and looking into a wall mirror. If she is standing 4 : m c5j-rycz,oft 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 dire)4w19tktc3 . 3r-dbamps o sfrz dtd47ction when it enters a new material. Which one of the following choicet1wcrzdka3 m .b349ttp )- 4r7osfddss is the term best associated with this phenomenon?

  96.19: Light that has wavele ;)ykb zz0qot3ual/-)d6pha ongth of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the mub0ot)/pzklz3- ; 6 qao hyd)aaterial?

  98.04: As sound travels from steel into aihe5 zgd,b+aq 0r, both its speed and its:

  00.01: As a wave moves from one medii/kwe +r:7j hwum to a second medium with a different index of refraction which of the following wave properties would NEVj7w/:+ rik ehwER change?

  05.47: A sound wave generated from a tuning fork of si. tj:fz/p hah;vd0n1m ngle frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is trzh :.fvj/ pmna0dh1 t;ue 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 swimmizompp-47 (t7bxlrmds1 7ui44 xrqy0e ng pool emits a sound wave that travels toward the surface of the water. -ulm417ypdxz rrmb 4qe7s 0o 7(4iptx 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 whitea;j:(v1.xlxqeh:n cc light strikes a rectangular glass block with an angle of inclxvcch:.;n xq1a:(j eidence 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 c-dng 0 n2,asbiwrb7y *pl5;8v pq t;nshown to the right. Whichtbpqgd 52ysn,p 07wa;brlv*ic ; -n8 n segment best represents the refracted ray?

  98.17: Which diagram b9r0dex*e 2hw pest represents what happens to a ray of light entering air from water? Air is at the top in all diagrams 9dx 2p0hre*we.

  94.11: The critical angle of a matefzt5wn*qny57 m h-;hn ng/-h mrial is the angle of incidence for which the angle of refraction is:- -hw*/m ;nhqn7nt5g5nzm yf h

  95.12: The principle p:zylhx 5:ee whzg: .-underlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by (xswqa/r-,c/d pw 9;4f ivqozwc 7g o)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 ocx8f zriz8 +x,:irrnw m9 bue pf);-8pgs :t+of refraction of n = 1.5 to material Y with an index of refracti,s8tr;:: iiwfp n)o+b-ruxcr+f8ex9 z8 mgzp on 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 pit4f+6c0 (e 6re ikdyn0h ycmpy9 pvh1:ece of glass by observing the critical angle of the light in each material. G0 dp6 ntry e16i hfh(9m+kyy:4 cvecp0lass 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 ligf ljc +7g;c ff018syydht makes an angle of incidence equf;jlf1 s cd+8f0gcy7yal 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 index of refraction n. Tu6d0k umlt:1q3i ; xbshe laser beam emerges from the mabimxk lt0: ;d13su6quterial 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 sho,hpr sq).z *jc:u6gwf wn in the accompanying figure. What is true about the respective indices of refraction (n1, n.urc,p:wgf6*z hs ) qj2, and n3)?

  00.14: A beam of light passes from y x4+erf2n3fx medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, xf+r 2ef3nxy4 n1, n2 and n3?

  97.24: The accompanyinn q5u66ik: v)z2ly l0c3u +ph+un dahag diagram shows the path that a light ray takes passing throu6yz)h 5ahkauvpd3ulunn +2q 0i+c : 6lgh 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 refraction?

  09.34: The diagram below shows the path taken by a monochrom): p6 *r8e, .ety3uz57 h hfnbdauecqlatic light ray traveling through thl7aqupfr3hd: 6teyueeh *.b8c )5,nzree 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 lighxpjl nn1k7 7ov(m3 p2j6pnxr3t 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 incic9d 8 ss(:gfg ajwme,4dent on the surface of a rectangular block of glass j,fg:aes4(98dg mc sw at 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 air into a pie/wdunyr05ret *qbk 55ce of glass. Which one of the labeled arrows best btey05kd5/w qr5r *unindicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters /;0fc . fsk+wx8msslfc-hk8i the right-triangular glass as shown. The glass hascx 8ms-ff+/k l s8i;h.f csk0w 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 glass?