11.24: Two wave pulses travel to the right toward a rigid b4y8 qhdbwu88d:qxi .obep8 u;oundary as shown. After reflection of the triangular:8b4ow.8xph8byd;u q d 8qeiu pulse, the pulses will interfere. Which one of the 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 the surface of a plastic dqg*5g.2 vuyxo 78 lkoblock. Which pair of statements correctly describes the phase changes for the reflected waveo.l xkyqd*g2u75v8 g o and the transmitted wave?

  12.02: A ray of light pat;dp4,,)u c 2uomqzzh:rfa* hm mvkvaf 7l:)) sses straight downward through the point labeled B in the diagram ;zl)uh *tzvam,)r ,ha ) odpfcm:47qmkfv u:2shown. 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 occursla .v ddf 7i*jx7funpe j s.6;swll5/* whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while srs:tg74pw* 8s lf *g qkh +rk8utqk6h1tanding in front ofqrthq*fg84 wrtssu16p* :8 lkk+gh7k 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 li krx t/a-k ):liivkv 26m,c3vmght ray changes direction when it enters a new material. Which one of the following choices is the term best associated with this pheno6 3ctiv-2ka :m,rx k v/kmlvi)menon?

  96.19: Light that has nd7tj.qh tp*+wavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of t.d+ *jtnpt hq7he material?

  98.04: As sound travels from steel into air, both its speedsrsg(12 9zcy h and its:

  00.01: As a wave moves from one medium to a second medium with a dtgntn3x 6y0:apnec-: ifferent index of refraction which of the following wave properties woaxc-y :3en n:t0 n6pgtuld NEVER change?

  05.47: A sound wave generated from a tuning fork of single4c l,sd)z.u7y 7s ienw frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which s4zdnu)c 7.ysiwe,s 7ltatement 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 bottom of a swimming poolll3,ulhp-l-4w niu ) :gf6zmt emits a sound wave lmnwhl6lpzu-f3:ug)-, l t 4 ithat 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 aq 6hmge u+h79z8um2l rectangular glass block with an angle of incidence 2hamz+ e l897q6mhugu of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lig hh1awx bg/j-5ht is directed toward a point P on a boundary as shown to the right. Which segment best rxb1w/ gjh-5h aepresents the refracted ray?

  98.17: Which diagram best represents what happz :84f pwtnp8kens to a ray of light entering air from water? Air is 8:zfpw4pt8 nkat the top in all diagrams.

  94.11: The critical angle of a mater/jew 0j uo;r3y*sdm y2ial is the angle of incidence for which the ard /m ;yy0*j2wosj eu3ngle of refraction is:

  95.12: The principle underlying fiber optics is:* ixyuirfc y79h km238

  98.36: The critical a. 7 jvradn5-ivngle in a transparent 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 ref,c4igzhj- p6j 45y yidx:8mlaraction of n = 1.5 to material Y with an index of refraction of n =y-cj8hi6zalim : gd5 4,j4ypx 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 dis8r:l / he/)vgjslbm)2 cf7fzjtinguish between a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of/j7blvj:z)le/)gf8rs h 2m cf 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 fron8):bry74uq jqiz;tx m air into a clear material. When the light makes an angle of incidence equbn r )t8q4 xiuyz;7q:jal 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 materi k h7pt1l ;6,shyevf9bal of 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 target. Th76bl;ykf1st p h,v9 ehe value of n is:

  95.31: A beam of light passes from medium 1 to medium 2oomzks:+8d+ 24//fubtfd gc q to medium 3 as shown in the accompanying figure. What is true abouto tdbous2:f kc/ +md/f4q g+z8 the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of lighthvu*481gr emo passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexe*er 1vg hmu8o4s of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows*uenn8ovbw g85kl7re )*pt u;h2 okf- 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 tol;neu8h7o2 b-5n k)urktepv *fw8g*he relation between the indices of refraction?

  09.34: The diagram below shows the ye9 /lgprq* .;(mqndy path taken by a monochromatic light ray traveling through three media.The symbonqq*d.; ry e p/lm(g9yls $v_1$,$\lambda_1$ , 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 travel 4;*4zrc nxftming 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 incident on the surface of a rectangu-l/j, c3ytyq4x :bzszom,73g v*sen llar block of glass at an anglz4y 3cvs/ 7,lm qs- gxnoej:yz l,3bt*e 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 a b -ifyy1txqjr032i +4ito w9sir into a piece of glass. Which one of the labeled y tb+ i o2t4ry39wixfj0iq-1s arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromaz4u*ypz+ eeyz04 r lgzg( .+zet3 ev*vtic light enters the right-triangular 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 path of (z .+yg0zzrt4yele3g *4 +ezu*vvpez the light after it exits the glass?