11.24: Two wave pulses travel to the right toward js cr f4r6m 3bd;r9z,m7dg.qa a rigid boundary as shown. After reflectiond,mz4das9 r67rjcr qfm b.g3; of the triangular 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 t qzizvf3)1hw (ku ;f(zhe surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wzqikzv3w)1 fh;f(z u(ave and the transmitted wave?

  12.02: A ray of light passes straight downward through the pointh )ftyjd 9:r(u labeled B in the diagram shown. The ray reaches a flh)r uj 9(:ytfdat 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 occurs59w9j) 3g q+uakszi3k7vq vo r whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while st6 fd1 +.bvbkyo ;g wuwlsb52w1anding 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 head, 6+;.swwlyvdbku1fgb1bw o52 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 a n:q1 sxd c)sfx*ew material. Which one of the following choices is the term best f*sx)1q ds: xcassociated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wa/1m 4b1 ajbsofdlrk v (jq4j80velength 400 nm in a transparent material. What is thas/jbmj4d0q18(4robk jlv f1 e index of refraction of the material?

  98.04: As sound travels from steel into air, both its spe0qnak : gv3a:eed and its:

  00.01: As a wave moves from one medium to a second *pxaeavu7 6,36a jgahmedium with a different index of refraction which of tge6*7 xuapav j,haa36he following wave properties would NEVER change?

  05.47: A sound wave generated from a 0h3z v/exxquy: aqc2;a.r rm p/+g.:fbw ja .xtuning 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 frequency of the sound as it passes from air to rpw2:.:y+/g3h.uvqx r fma r;0x/xa bzjaqc e. ock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a p1dwu0ckz y(9de + r5dsound wave that travels toward the surface of the water. In the water, the sound wave has a frequencyzdu+9y510edcr dkp( w $f_{water}$, 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 sne10ez1(t kqlh:* 7 vrn)icu dtrikes a rectangular glass block with an angle of incid: 1qiu(zn1vn rce7ed* k)0 lthence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light 0 7hu-n z3:,ageiypwais directed toward a point P on a boundary as shown to the right. Whi7a- hpeg, :nuai y3w0zch segment best represents the refracted ray?

  98.17: Which diagram bes i qd:71yxf ttjt;9yk(t represents what happens to a ray of light entering air7tt9x;yftd :(yik1 jq from water? Air is at the top in all diagrams.

  94.11: The critical anglebyrl; dqtm8dd)-1h.yg()j cc of a material is the angle of incidence for which the angl)18 ;lrt d dybjgcqh c(.my)-de of refraction is:

  95.12: The principle underlying fiber opticssjl( 8 w(fw6p j9iqgs; is:

  98.36: The critical angle in a transparent substance surrounded by 9 1/cumbn l u)gon-- l t*fzkox5h(jf4air 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 a3 dnmi1 bv38jd 4qku-6mhum 4zn index of refraction 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 speed oi udd3qmknhj4vm-8b61 z 3um4f light in material X?

  03.15: A jeweler can dist7l pjw38 x0egt66)hn i o*jmz ozfgl;7inguish between a diamond and a piece of glass by observing the lxg o jmzh 7e)8wgt3p l;n6 j*0zfoi76critical angle of the light in each material. 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 inb c5.gftr)nb(znx zs1 *;t4 qu+ 1natzto a clear material. When the light makes an angle of in g*+n)z1b.tcxqz; rfzab4t5s 1n n(tucidence 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 refrak fxwx)1dk-y ,ction 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. The value o)kwfxk- d 1yx,f n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as s4 r8kq,y9ujbprfw0vxg w+ u 7/hown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)w7v w0u+uy k8 9p,rxqr4jfbg/?

  00.14: A beam of light passes from m +fqpq 097ebikedium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded a9kf0 qi+p7qe bbout the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows theof n0wi (.kl4hu 51fek 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 .hoflk1efnuwk(5 04 idescribes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochro4 8gd* zyp5lh4 k5wxqoy34d hwpc0*dlmatic light ray traveg *wyokp x 4yz30hp ld4cqd 4ld8h5w5*ling through three 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 light traveling42k fzi8t u8i- +hzchw 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 y/-f i4s+ *bk -vs w*twr1ylxysurface of a rectangular block of glass at an angle /ty 41xyswf+- siy klrw*v- b*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 fro 7p/o ng;jhlme vw(/z5m air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray aftev wjp( /5hl ge/mzo7n;r it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown. 6iu plhnh2g/eh. 3;do;l0o /:bke vuk The glass has an index of refraction of 2.00 and it is surrounded by air. Wh o0l2b6hn glpkh.uu dkvh/3ee i;/; o:ich one of the lettered rays shows the path of the light after it exits the glass?