11.24: Two wave pulses tref hrt,up c3s f 1o/-j-bj0g6j cd( 4qpf5mq3bavel to the right toward a rigid boundary as shown. After reflection of the triangul 3-bf-hu,eq 1co456 p0j(rtqcpj 3m/jfb dgsf ar 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+x5s f,syh5wu+0 9bt2f watji the air and strikes the surface of a plastic block.2xyu0 fft5whsit9aw + b,s5+j Which pair of statements 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 labelebe03fz( sqxj vgf3rxm.rd ; 98d B in the diagram shown. The ray reacb9r3x(mjxgf0q e.rv ds;z38 fhes 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 light is incident osm ;6d hvt*7hin

  05.18: A student hold a hand mirrjnh 75z+jw;k jor to observe 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 head, she will see the back of her head howjk5+h zj7;jn w far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it ent+chx45;p.ptxn b0anh3cbs m9ers a new material. Which one of the following choices is the term best associated with tps 9hnnxbb;c t3hx0p +.4cam5 his phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wave;z 6yb+c57 6 vqlxpcmnlength 400 nm in a transparent material. What is the index of refraction ofc6zm ;xbvcy5p76 +nlq the material?

  98.04: As sound travels from steel into air, bothl f21xbfzs bz /ea/;2/+cgchw its speed and its:

  00.01: As a wave moveo wl5n8g i00(how-geel.hd(lo v9 i-vs from one medium to a second medium with a different index of ro0g vo(5ov(dwli-.8hh 0eweil9 ng- lefraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated frofnl,v2gqg7,/fomp( i m a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into romg ,i7/vpf 2gf nol,(qck (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 rock?

  14.28: A waterproof s.qdi c:rb,-cq , rsvpxi*,9axpeaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has9a-x:, qc cs,rxbriv,p .dqi * 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 st8c.mv9;(w2* l txtnqw9 uy ownrikes a rectangular glass block with an angle of inciy8t29.;mtc9nxo l ( nwwqwv u*dence 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 d8p-tqz9+g+.p o myfy -ed/mza point P on a boundary as shown to the right. Which segment best rd9-gq /y fy-omz .pztem+p d+8epresents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of lixx0 :,siv je s*x,4uxzght entering air from water? Air isj*,xeix 40 suxv:zsx , at the top in all diagrams.

  94.11: The critical h u*crkbclqjg.62f95 angle of a material is the angle of incidence for which the angle of refraction ishj r59cl6qfk. 2ub cg*:

  95.12: The principle underlying fiber optics isehi(jfu0 b// 3 u48 u9tboppsx:

  98.36: The critical angle in a transparent substance surroun.lz+vurxx/o m374jkrba a.( d ded 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 mpcw 43mlq3(jz gx331v skm6apaterial X with an 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 of lightxkszag3qj4 wvl6c(m m3 331pp in material X?

  03.15: A jeweler can distinguish between a diamond:a/-tu zm )7i cu6 k8,r9uoxe3dynzsg and a piece of glass by observing the critical angle u)d8xi:ack3/m grzt y6e-z nu7,9 souof 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 into a clear materiau0h7d ; pxfymc0 whq6+l. When the light makes an angle of inh mf6d0hcx7+ p;y0qw ucidence 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 llb39(8 btgtjm aser is embedded in a material 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 th39j8 t(bg btlme laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to myziy g;*i7 lbzx8z .m6edium 3 as shown in the accompanying fig7zgimi8 y z*yzxlb;6. ure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light pad-f/,txyi 7t meips(:sses from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, ydt,s7-ft e i :/pxim(n2 and n3?

  97.24: The accompanying diagnh-zft1a zp(4xdsx k)(gm8 24s i2uie ram 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,sz s2)umtx4ie(i4xfz8kh 1 a( 2n-gpd respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below su8+u59kq z+b v wnu*uthows the path taken by a monochromatic light ray traveling through uu +*8+u5 bk w9tquzvnthree 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 tra6/amoz ;58afrwphd1rveling 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 rectl,x3 6ojtood0r::0u x9gen xdangular block of glass at an nt x9:xo6erd0o ujo,dx3g: l0angle 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 60bqg;8 ,)z n4ub:vup ):qoo,ip ft0hgl0nm is transmitted from air into a piece of glass. Which one of th)gpb,bf)p 84qv:uz ngt0l,i oq:;ouh e labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-tviu fst5j jxy/2) ge)+riangular glass as shown. The glass has an index oj2gis)5 yu)fxvte+j / f 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?