11.24: Two wave pulses travel to th. rr4 tuycfnp7m3y mg5gx(f.9 e right toward a rigid boundary as shown. After reflection of the triay n gtm75rcxmfgyr9u. .p(34 fngular 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 teps qa7e( v33*,ewpuw(jsxrf w2/vp 8he air and strikes the surface of a plastic block. Which pair jw qwu* (, 7sea/sr28ep(33wvfevxp pof statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through thswv 6k:ut (;1rzv8 71ufh nucve point labeled B in the diagram shown. The ray reac1 t78vksfvuu6c;h nw:( 1zuvrhes 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 li/7m 2s6s9dni4vno1lv e s*oidt6 e(srght is incident on

  05.18: A student hold a hand mirror to6b y,/celu) 4fbh k9oo 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 bacy ch9kbf/, )oel46u obk of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when xpsm yb/rlr+e+za56 i , ;,sy0jsar2r it enters a new material. Which one of the following choices is the term best associated wi20sai rjrl ; erzp, s5+bsar+y,/6mx yth this phenomenon?

  96.19: Light that has waveleng305dsr.e gusy th of 500 nm in air has wavelength 400 nm in a transparent material. What is the index oes.3u sgr y05df refraction of the material?

  98.04: As sound travels from steel into air,,bjb . za,;rpq both its speed and its:

  00.01: As a wave moves froath6b (*fg nx2m one medium to a second medium with a different index of refraction which of the following wave properties would NEVER canbt2hf 6gx*(hange?

  05.47: A sound wave generated from a tuning fork of l-w ;pwyz4c 60lgjw-gsingle frequency travels from air (with speed of sound 340 m/s) into rock (wi- z 04wpl6c wjwyg-;lgth 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 speaker placed at the bottom of a swimming pool emits a so s o*q16rgb,ef fs+za2fa8x3 tund wave that travels toward the surface of aes g31xz,ft8f*asq2b 6o +frthe 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 bursteuwyk4lc ,u 1: of white light strikes a rectangular glass block with an angleeu 4l,:y1ukwc of 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 directed2lyk7njda4(or k-u+ e toward a point P on a boundary as shown to the right. r and47 ulok-ej 2(y+kWhich segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering aikgiu/ v6 j: x4r(exl5d/f3sxf r from water? Air is at the top in all 4ej fids3ur(x: / xkfgx6 lv5/diagrams.

  94.11: The critical angle of a m9jbd-l jwn+m *aterial is the angle of incidence for which the angle of refraction dnj9*-wlbj +mis:

  95.12: The principle underlying fi* ny6rb:g oyyzjs*)b2 ber optics is:

  98.36: The critical angle in a tp+(;hx.q1 r+8us5 jnqicjna aransparent 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 c2d :hvs 2dl-bb4 1jirn = 1.5 to material Y with an index of refraction of n = 2.0. If the speesdr1:b4-b2i ljh2d c vd of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and aptb26 6ag l+wb piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle of+wlb2gtpb6a6 $41.1^{\circ}$ 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. Wf9fzsw(h7 o,zw io/ o-hen the light makes an angle of inw f(-7z/i9zof , woshocidence 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 refraction n. gu 1di5a5-wodThe laser beam emerges from the material and hits a target. See the accowog i d5-dua15mpanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes y,-6n kls syt1from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about thet1,6ksyy-n ls respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of lig /fet .1nmkr:jht passes 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, n2 and :1 en/j frm.tkn3?

  97.24: The accompany3*uzcr prr 6m1m+lqc 3ing 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 of1l3urmqcr6p zm 3+rc* the following best describes the relation between the indices of refraction?

  09.34: The diagram below sho;nuv-ydhvq l va+:a03 ws the path taken by a monochromatic light ray trave- ;aalyu v :vq+n0h3vdling 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 traveling in glass zc di03bnu3;l9:- u q0v osvng($n_g$=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 r3v667ad2s s gw((utsq/ cdndoof4ru* ectangular block of glass at ana(6dcsv 64qods3wrt u27fd/*u go(sn angle 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 a5:.oej/ zroz2i q km qztkpoj4v063l0ir into a piece of glass. Which one of the labeled arrows best indicates the path of the light raylkjemtir2oo.oj q600vz3: /z5qp4 kz after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass ap p * m.fjbpx5x061(oseqe2ra/; wlj(1wud eas shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one jap6(dsx5b1lue o1 /(eqjew .xm; pawf*p02rof the lettered rays shows the path of the light after it exits the glass?