11.24: Two wave pulses travel to the right toward a rigid bou; .t5jc4m dmdvndary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of 4.;cv5dmj dtm the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes througsnk( s wfd2p2-/.(t tzhfj*hd h the air and strikes the surface of a plastic block. Which pair of statements c(.ft nkswstd2f2-( / pdjzh* horrectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labyqax7* j3.2g78tkv9 lebbg a2 ldq-bkeled B in the diagram shown. The ray reaches a flat mirror vk d tl*22 y 3kba- j97qbg.8bgx7elqaplaced 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 ligb9+zsh(: *jiv tvzqy73tlhg 9ht is incident on

  05.18: A student hold a hand mirror to observe the back of her head while stan skr)p)fqq7r8ding 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, ssk87 )rfqpr)q he will see the back of her head how far behind the wall mirror?

  14.25: It is observed th:k d.r2fc fzb8at a light ray changes direction when it enters a new material. Which one of the following choicefrk:d .2fb 8czs is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nis(sbg i 1j2h)e ic2uf35jrz9m in air has wavelength 400 nm in a transparent material. What is the ind eb)i2 guzjf1ics352 (9s hirjex of refraction of the material?

  98.04: As sound travels from steel 38n6k ctk fal,;:obb sinto air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium wi.msb-.lxcd5f 5 )/8e gpwj*t6 xrnxyhth a different index of refraction which of the following wave properties . r5g ldsw)*5jbhtp/ f-xxx6c.ym8 newould NEVER change?

  05.47: A sound wave generated from a tuning fork of sin : o8mdpnd;s(tp3 nos xhvv5.6gle frequency travels from air (with speed of sound 340 m/s) into rock ( ;dopd 58 vonx3m v.6s:hp(nstwith 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 1ky 28y, yk dxnaprdl53wm2/zbottom of a swimming pool emits a sound wave that travels toward the surface of the water. In t82,1ay3d / rk5yxy2 dmkpwnzlhe 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 mx ()h jca-w:yof white light strikes a rectangular glass block with an angle of incidence of) jc ah-m:(xyw $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed qc p8t/9.sczqtoward a point P on a boundary as shown to the right. Which segment best represents the refract./z 9p cc8qqtsed ray?

  98.17: Which diagram best represents what happens to a ray of light entering aica0v;5tj11byu2 hdd ir from water? Air is at the top in all diagrams.1yd b0 uj1;d ivca5th2

  94.11: The critical angle of a material is the ankbc:c 9 2 +tibe8g9 evm0hliz6vx;(d lgle of incidence for which the angle ofdzt6lcv kbghm(9ci le:+v ;xbi98e 20 refraction is:

  95.12: The principle underlying fiber opticix1:nzr l u:p*s is:

  98.36: The critical angle in a transparent substance surrounded by a h2fs,m:g6ludir 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 materia8s+21. wmuhg cl(4blt se kl.ul X with an index of refraction of n = 1.5 to material Ybs4utmel .21u 8 .clhgw(kls + 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 X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by 95y xn/ 0xgc lw.fdio9observing the critical angle of the light in each material. Glass with an index of refraction od5cxofl90. ygnw x/9if 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 intav mewxu,t .s9d3 n9w5o a clear material. When the light makes an angle of incidence equal tntvw9us ,.e 95adxwm3o $30.0^{\circ}$, 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 fzicl0 33x:w5w fe4sr n. The laser beam emer3ixel :wwf f4sr 50c3zges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium p.q k:r4sje)f 2 to medium 3 as shown in the accompanykep)sf: 4. jrqing figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of ligp xj7cf:glund+-h(8i *r kx:pht passes from medium 1 to medium 2 to medium 3 as shown in thukg(h ilf :x rj:npxc+ p8*7d-e diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing+ ftginu t:p7. 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 relation between the indi t nu:p7gtf.+ices of refraction?

  09.34: The diagram below shows the path tajzco9:p meua)c1kq7y ;s1wy; ) auk7h9r k9uw ken by a monochromatic light ray trave)wzeuco yuuwmchk7rjp991);q9 kay: 7a ;s k1ling 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 traveline2 yfyfc-*kq7gn::b v g 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 am svtjbb* h co9789b-p rectangular block of glass at an angle of 7*cpo m 89s9v-bbjbth$45^{\circ}$. 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 a piecep yhjj l,5ljc9ok: 4f; of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the lj9 ,y; jfk4:o5jcl phglass?

  14.44: A ray of monochromatic light enters the right-triangular glass as s j+jd:3eb9o5erd t3jo hown. The+3re9dtj d5b:jejoo3 glass has an index of 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?