11.24: Two wave pulses travel to the right toward a rigidjv su c/8d0*gd boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of t0uv/8gj dd*c she pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air5 *vj n8pky+bf and strikes the surface of a plastic block. Which pair of statements correctly describes the phase chaj8+f* vy pb5nknges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in lgml; fv0a,* tthe diagram shown. The ray reaches a fllv0f ;a,tl gm*at 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 reflp7cgq :;dpv35+zh n8/qy d sitection occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe t+r vgw f.19d*h cmk0vlhe 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 vcdvkrlf+. 01 9 w*hmg 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 light rp7anq hd cug,4z*0suq ,:y2rray changes direction when it enters a new material. Which one of the following choices is the term best associated witpuhn zgcrys4u2 :, 7a0qd *rq,h this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelepi y3)kvskpp p0e ;//fky jj*9ngth 400 nm in a transparent material. What is the index of refraction of the iykfy 3*eskp)pp; k9/jj/0pvmaterial?

  98.04: As sound travenc-o1x c9 cg6i5ldej m 65lu0cls from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medom +53ja 1qrxur0 i1d trqg.4xium with a different index of .r43xj i+0u q1o rr1x5dgmqt arefraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of gh9 noxg20 5 vcg6k5gk*esq) bsingle frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Whgb6eskvc2*9hgg) kx 5 0gq5noich 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 bott7:nb(p 6mze bgom of a swimming pool emits a sound wave that travels toward the s b(nb:7 z6pgmeurface 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 lfawq yk4; j+1aight strikes a rectangular glass block with an angle of wfa j q4y1k;a+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 directed toward a point P on a boundary.qppx 6,vvfl up5 2bz. as shown to the right. Which segment best62 5xvz,bqf ulppv.. p represents the refracted ray?

  98.17: Which diagram best reprepvb q6 b)-t1tt) qfjw1sents what happens to a ray of light entering air-1)fqpqt jb) 6vwt1tb from water? Air is at the top in all diagrams.

  94.11: The critical angle of a wgu-*8v ,:uup 1djbu smaterial is the angle of incidence for which the angle of refractio us,v1wj8 p ub:u*gdu-n is:

  95.12: The principle underlying fiber opticsuu/a2a7w( yw 5eqpui ,5,q w4wrh1prh is:

  98.36: The critical angle in a transparent substance surrouug k3m;32 :nksw ja2qbnded 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 travelsxv io x83c(-uf.1zkdh from material X with an index of refraction of n = 1.5 to material Y with an index 3hxvxo( zdu -c.ikf 18of 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 distinguish between a diamo. 4guqeh+q.g7haqb c ,uekvrzpq-q 0.,.bg+tnd and a piece of glass by observing the critical angle of the light in each material. Glass with an i.r47qzteg,ge.+gqaqk.+hc,0vquh ubq - b .p ndex 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 maki;ys 5g0)6 pr pbcqt g3j(dso*es an angle gi6 o5c pry g)qptss3*b(d;j0of incidence 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 lase:+6bonm, yzo2b yxb 5lr 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 the laser and target. The ymn:2bxbb+o6,5zoy lvalue of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as d6 vq fowgnh a+33n7m:oat/z/ ,o+iuashown in thtdqwfo +/gu amoon vha+3/37z6:ani,e accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to me2hi uon8 n7u9fdium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, f9nuh8uoni27 n2 and n3?

  97.24: The accompanyi3 l gkd;fhz,9lv v(o+ung 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 rela9h(zvgu, kl+d fvl;3o tion between the indices of refraction?

  09.34: The diagram below95ambadjw.ix7 srmg f, -b. /t shows the path taken by a monochromatic light ray traveling thrtj.fwg - mi7 b5.sba9/ axmdr,ough 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 trf zo 30(v;xnwqx hgm*l2p 2z6aaveling 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 rectangularzukpe3mc,:x yboje956(- fbe block of glass at an anmju k(-c :93eef6yb x,bp oe5zgle 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 acf1o67e*lic;n yz7e i piece of glass. Which one of the labeled arrows best indicates the patz7y61f li*;o n ec7iech of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-tr4l qo7ygv ww6-pv:xk3iangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of l7w-4 k6qg:3vo vywxpthe lettered rays shows the path of the light after it exits the glass?