11.24: Two wave pulses w v4q2vy:9 -j+wl88oqmqr 4vzlizp58rwc +tt travel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the supertz vpl485cr: w8mq qqiw-9rt 8l +4v yo2vwj+zposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through t3o2y e5w 7nh0/qmyw:.d ptnt hk0 de(nhe air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes foeq/ dye572hnn nhkw0(.dp:mwo3t t 0yr the reflected wave and the transmitted wave?

  12.02: A ray of lightr9n:u v; re.;*hdmrwx passes straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an ;dxuev; rw* .nrh9:mrangle $\Theta$ 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 reflectionb lx o 1tmloqjin9+e 489us5v- occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe/;8u5 rpvb+uxcud jc9 4ydnq- 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 mirror 1 ft behind her c-qxunpu uy +v5r j8c9;/4 ddbhead, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a ligh8r 2 yr zrnv*macc4ec,y m(eq/ijo4 f2h3;zq8t ray changes direction when it enters a new material. Which one of the following choices is the term best associated with this phacz*4e rm nhiy/z ocr8jqq 4m,;y322ce r(v8 fenomenon?

  96.19: Light that has wavel3pg5i;zmg ;dsux8- ty ength of 500 nm in air has wavelength 400 nm in a transp;s5;ti pu -83mdyzxg garent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, bothnzv-u vz 5/ zj19r:nve its speed and its:

  00.01: As a wave moves from one medium to a sec s tfm op0t*:l 2u83)w5mylhitond medium with a different index of refraction which :w3 i*uof2ytlptmh t0) 8m 5lsof the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single +9/ iq1bocjoq frequency travels from air (with speed of sound 340 m/s) into rock (woco 1iq9+/bqjith 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 speaker placed at the bottompkg(( fwqpp3zc tq1lvb(t 37; of a swimming pool emits a sound wave that travels toward the surface of the water. In the wat p1 vb3 p (7cq;wpfglqz(k3tt(er, 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 glass b*n svl01v l / ai451hjbfzf+enlock with an angle of bavh f f+ *14z0nnjie15v/s llincidence 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 shot lba(wo5) gtqf2vp24/ opz4n wn to the right. Which segment best represents ttw o52t)an b/2 vop 4p4qz(flghe refracted ray?

  98.17: Which diagram best represents2 ,x3v9mlz ncz what happens to a ray of light entering air from water? Air is at the9 n2m xvclz3z, top in all diagrams.

  94.11: The critical angle of a material is the ang 1.cjl1 o)twsyle of incidence for which the ant)lyjw1 s o1c.gle of refraction is:

  95.12: The principle underlying fibe2s;e v6 rn;g,s:xidy+zi ,i hhr optics is:

  98.36: The critical angle in a transparent substance yt.xwf3tr9 s/p5 ggk) 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 ze/n/4t( aaean*tm p*nm (-ovX with an index of refraction of n = 1.5 to material Y with an index of refraction of 4o/(e/n*-nm( ata*ptznm evan = 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 dkv o+2 ,:p30gc;: u oouqffuatistinguish between a diamond and a piece of glass by observing the critical angle of the light in each mateco0 fu:foo:v +u;tak,2pgqu3 rial. 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 anglp bek e(nz,3n8e of innnp,kb ee8z( 3cidence 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 of index of refraction n. z6.de lf e se9gh)z9n)Tf 9 )).lg6heeezns 9zdhe 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 is:

  95.31: A beam of light passes from medium 1 to+ad3mpwtqy2 7-gg u /f medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1t+p/2 7-agdwmgf3q yu , n2, and n3)?

  00.14: A beam of light passes from medium 1 t;y((lvn7u1 v dc t 8pu6l0vsq3as* cffo medium 2 to medium 3 as shown in the diagram. dc*vplq7vffat(v6s18 l(u;3 cy nu0sWhat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyic6 fuf8(qudc :/5mgx vng diagram shows 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 refr/vmqu: c5f f d8cx(u6gaction?

  09.34: The diagram be3, sdms9d*p zqlow shows the path taken by a monochromatic light ray traveling through three media.The z q*pd3ds,sm9symbols $v_1$,$\lambda_1$ , 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 g-l -*lgp7 .v jboyha: tb/k/ss;nm0hslass ($n_g$=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 t y3 lontx2 ;sxiodtb ce5doxq,*0(,t .he surface of a rectangular block of glass atoxic.n3b0*x5 q y;tds ot,otx 2d,e( l 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 piece oepzp*w( c/dv+f glass. Which one of the labeled arrows best indicates the pawcd(p +p z/*evth of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangu+1c wm2 euqw-mlar glass as shown. The glass has an index of refraction of 2.00 and it is surrounded 2u -qewc+1mwm by air. Which one of the lettered rays shows the path of the light after it exits the glass?