11.24: Two wave pulses travel to the right towaqulejsl 79jmywb: 44/lwcs1.a) sdf5 rd a rigid boundary as shown. After reflection of the triangular pulse, t7fbsld suy)1le.4mwqjl:w 4 cas 5 9/jhe 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 a,/wiwr r +ppx*ir and strikes the surface of a plastic block. Which pair,+r* wix pw/pr of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downwar5oiq3(.4j1, dck s o0tx ruseid through the point labeled B in the diagram shown. The ray reaches a flau5c,ie(4 xj kior3d1 s.ostq0t 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 reflectol6qa 09dro6e 1ulxj8 u vm)5sion occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back o1 (op1c .cnn82d8mu wyq /z4ca9caeeuf 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 t198enz1nu m( c8a c/cwque4 2.oyd pache 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 light ray changes direction when it entr95dyh*n i* 9vbol m *0vi(filywq:q 8ers a new material. Which 9qw(h:rib m yy8fdovq **l 59n0 l*viione of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavbwh(q+jmuz ox1;mq 9/elength 400 nm in a transb+xqz uqh mo;9m1/ w(jparent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and 0t3jeh1hs 7l+mkgs 7f jb 64jqgv-n+wits:

  00.01: As a wave moves from one medium to a second mutwu+z prr( p-8qc se3hiz*0) edium with a different index of refraction which of the following wave properties wz80 sw-(uirutrz h q3*pep)c+ould NEVER change?

  05.47: A sound wave generated from a tu2p-i auw ijjp33t r+ lon0mw.1ning 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 impo wu-ila .+13jw2p rjtn0 3passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swi+pp):uij 4qikmming pool emits a sound wave that travels toward the+u)kqp :pj4ii 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 -m(2a-mk:g:ix jg07udcay1 fyp pfgxs-a;;e a rectangular glass block with an angle of incidence of ajdcp 7( mxaayg-- ;igk:s 1yu gf;mx-e0p2f: $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light e7l0kh(hxv 3 tis directed toward a point P on a boundary as shown to the right. Which segment best represents the refractlh7 tkxhv0(3eed ray?

  98.17: Which diagram best represents whck57 pllnf3t ni96q;/s n9vy gat happens to a ray of light entering air from water? Air is at the top in all vq7p 9lfk;sgnnit /5nl96c3y diagrams.

  94.11: The critical angle of a material is the angle of incidence for which 5bhuw-vf 741wat4p zg the angle of refrh 475vz4f -a w1gtuwpbaction is:

  95.12: The principle underlying fisiz g -9;izyf dyx9e3)ber optics is:

  98.36: The critical angle in a7pyo./ bw pgk. 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 refraction of n = 1.5 to m fjb7 zp w2(bn-p3v+l(g(r vawaterial 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 light in material 3 +lpbaz wrg7( fj v(pwnb-v2(X?

  03.15: A jeweler can distinguish betweexir 7v 1lc: vcck h,w25-z0pg1z-ewsj z-cp8yn a diamond and a piece of glass by observing the critical angle of the light in eachcz1p5-pz1zvw:r7-kwgs yc ic0-ejhlv , c 28x 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 material. When p8f*0ao e8fh0t wbd6z4a0z kr the light makes an angle of incidenced048 o80zetffpw h ka*rba0z 6 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 hcb-tl+3mfo, - yckc/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 lasebh/m,cc f +-oy-kt3cl r and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown ino3 p i1qee,oe1+6k:vw8we xog the accompanying figure. What is true about the respective indices of refraction (n1, n2, anvx 1o 6+oi:, eew p1keeo83gwqd n3)?

  00.14: A beam of light passes from medium 1 to mj e.mzn8lpxzw/ve.lb : z1 ,3iedium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 andvmwez3n:8z.plxibz1, .lje/ n3?

  97.24: The accompanying mrc5e*w/b q.k 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 nmc/b*krwe 5q .3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below show jlpc;p:qfc61j pim. 6s the path taken by a monochromatic light ray traveling throuj m6jlpp16fqp.c;: i cgh 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 traveling in gsmchy8. +t3wadk ;xk dh225f ilass ($n_g$=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 suj)np1l1y*px (vfu.ilrface of a rectangular block of glass at an vx( *l f1 jp)uniy1.plangle 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 inx ,u4/uv33py w cjm1 spnfv)x+to a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it en3vm 31ux4,x+v j/syncp) pufwters the glass?

  14.44: A ray of monochromatic light ente s4oo0t.8fb(/j fvxnw rs 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 p/wox o.vf4ntbf0 j8s(ath of the light after it exits the glass?