11.24: Two wave pulses travel to the rwxhx uh5h 1j(5:6deail2cdwb;s/a /hight 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 superposition of the pulse :1d6e lw /ah 5j/hbuxsd;ixw52hc( has when the centers of the individual pulses coincide?

  08.30: A light beam passes through s+yumu n25.j qtnlswg)d+8a: the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and ms w. u2n+jtuag:yn8dls 5q+)the transmitted wave?

  12.02: A ray of light passes straight downward th8qka.z)ef6 ibo, qsa+rough the point labeled B in the diagra ai zqb.k6,8fqse+ o)am 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 qus)z1vtv 4(b light is incident on

  05.18: A student hold a hand mirror to observe the byn-x :xku8(.6q so mpej (w+cback 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 heeyxjc. bmsxp6 qo(+kw8n:-u(ad, 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 whe 7;jjhh.okkir9- h/l kn it enters a new material. Which one of the following h;/ .kol j7 h-kjhkir9choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a2ogz.sr u /(:qtsse0c transparent material. What is the index of refraction of .s 0z2 soq(s /:cretguthe material?

  98.04: As sound travels 7w 8f th e7+lxzd-dcd8wj6q +kqjv7+ afrom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a se )-myj+3ji ;.pormqen8qxmy+ cond medium with a different index of refraction which of the following wave properties would NEVER change8+-+ ei ;ymq mpxjy.r qnom3)j?

  05.47: A sound wave generated from a 9j7p+--s;nkrw-eakns:cy3 k+b /h /rfhz wxytuning 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 frequeb+kry;+-kyw s s /w7 :x -h hnn3z9f/epckja-rncy of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool zku+zzkdhlxu;3 (w; ** wved2 emits a sound wave that travels toward the surface of the water. In t +hewzx 2v3;z*;ul(uk *zdkdwhe 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 rectangul)4kxn7- en :hexfe9xuar glass block with an angle of:7 e9n exh)ekx4fnu-x 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 direct md3f1on,(0sqx4e6am wcc f;u h2se s1ed toward a point P on a boundary as shown to the right. Whi2ansf;s3wqh o(e01m6,usfmcx41d ce ch segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a k u82rf6/* tzziceus4 8s.;1 lmvnxbkray of light entering air from water? Air is at the top in all diagru8ezs.i6; 4u*kvf m x/nk12rl st zc8bams.

  94.11: The critical angle of a materm2wvr)thkt u01d 0 bni+t) s1dial is the angle of incidence for which the r0vbm) +hs)0n2tu1di t1kdtwangle of refraction is:

  95.12: The principle underlying fiber opticsdn2s 825ze2 a+gn oz6 tlxkbe0 is:

  98.36: The critical angle in a transparent substance surrounded by ar.yuev -,a ll)kt peh+*5m t(dir 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 witg4mmzvn oqp ibn27 +;5h an index of refraction of n = 1.5 to material Y with an 4m2v ; mnob z7ng5ipq+index of refraction 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 di)ayp6 f)/ /u +1 fmwew:vqdawastinguish 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 w+auv6f/ ewfq:a1)ma y w/dp) 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 qaxd-+j r m dty9rb8e 0g -l.kb*17algmakes an angle of idg918- 7qbr-l0x a .yjelr+k a*gbd mtncidence 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 refractio7(rgzu/osod rq /7e/wn n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position p7 sdu q/wze//7r oor(garameters of the laser and target. The value of n is:

  95.31: A beam of light passes fr9e f+4 d0seg5lohm:fzom medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is tr: 5elgs4+09z fdfome hue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medb ,a ti(.(0fvv lqih.hium 3 as shown in the diagram. What may be concluded about the three indl(a .0hh,(tf iv.vbi qexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light 9wmo r49 br5 yg*z2rxfnrzwv02- /sfr 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 refracti4 r- ryfz5br/s 9fwm2zxo9rn2w rg0*v on?

  09.34: The diagram below shows the path taken by a monochromatic light rayith-b .i+x2p r z.kg/q/q le7x traveling through three media.The ihq /t7kx+ei .x2qr z/.lgpb-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 travelintt;*nk m1 mof:g 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 inc( nkc;n4sdor eo1c3 -kident on the surface of a rectangular block of glass at an angdr4( nk1-sco;3nock ele 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 t1mlm/x 6d9 hyy/o9xmt ransmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the /mdmyxh 61 toml9x /y9glass?

  14.44: A ray of monochromatic light enters the right-tr albo0 ,hk*0gyiangular glass as shown. The glass has an index of refraction of 2.00 and it is surro0og0lh aby*k ,unded by air. Which one of the lettered rays shows the path of the light after it exits the glass?