11.24: Two wave pulses travel to the right toward a rigid bound b+o* jst;2xabary as shown. Aftbj2o; tb*x+sa er reflection of the triangular 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 passm9h1xt.. mxgnu yur, b 2zkg5+es through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the tran u9x kg1,. mhmtz+xbu.ry2g n5smitted wave?

  12.02: A ray of light passes - up;+wqnv nbb)) b:dmstraight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placeb nb:wnbdv-+p qu m);)d 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 incidb l bu6,if50agent on

  05.18: A student hold a hand mirror to d6 - agevxx2yr7q:5sa observe the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ftx6y5xe7 ra-a2gd svq: 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 how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when vsg n.04yr(bw4mc*va*os (xpit enters a new material. Whic*r .(w*4ym (bsgv0nc4 a vsxpoh one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air2ecz)lgy9nk :8 b vb,e has wavelength 400 nm in a transparent material. What is the index of refraction ofv)lce9ezkb nb8gy 2, : the material?

  98.04: As sound travel(2vohi7p9fw gvbl5a b fuvr3 2l;3xf8s from steel into air, both its speed and its:

  00.01: As a wave moves from one medium t8 h* naz,cjv(vo a second medium with a different index of refraction which of the following wave properties wou(, zja *hcvvn8ld NEVER change?

  05.47: A sound wave genera5)rihy67ygp*,vgmmi ted from a tuning 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 frequeniig7m yp56v*h, rmgy)cy of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at tht fflq 775kwjyp3d-h9e bottom of a swimming pool emits a sound wave that travels toward the surface of the w-9wp7 j 5qlk3t7ffyhdater. 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 ( c zv5qcf1c .nmi2hz6of white light strikes a rectangular glass block with an angle of incidence ohfq2zccc 5(.vi61m n zf $0^0$. 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 as spj,d b0.d jxq1topt3-hown to the right. Which segment best represents the refracted ray? ot p.-,t qd10xdjjb3p

  98.17: Which diagram best represents wh uu2r .vv+:eutkmjk* ;at happens to a ray of light entering air from water? Air is at the top in*urujeukt.m;+ k: v2 v all diagrams.

  94.11: The critical angle of a material is the angle of incidence ffi9wr y)q.(x/n;on waor which the angle of refrfwyoix/ );nr (a.9qwnaction is:

  95.12: The principle underlying yal7 , +l qg44vp7ki,v xz*omffiber optics is:

  98.36: The critical angle in a tran cdl) nq/koit5,*+ vjosparent 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,w;mxh-odlncr( w /d3od4fq 3 X with an index of refraction of n = 1.5 to materf;m d3 wwh-cxq,dlro/d3o(4nial 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 X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by obserdns) 4g zn.5noef27hw ving the critical ang2 f)en hzdwns.4o5n 7gle of 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 fro8b0nf-vl . mrna1bq4qv+)bq nm air into a clear material. When the light makes an angle of incidence v qb0amlq4nqbfvn r.) 1-bn+8 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.x2 xri8t9z/r x The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. Thex z2irr8xt9x / value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as sh,/,;tazor /uepp5dd;yxv *qy own in the accompanying fv/d;; pqex, 5tpy rdo u*yaz,/igure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medi81 bzzl,y3 u53x pmry7j6tv saum 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refractpbvu8lyz31j6 ,ma7x y5zstr3 ion, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray t fxzj03w*8 +c lr8otazakes passing throo lzcf 308t zr*axj8+wugh 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 indices of refraction?

  09.34: The diagram below shows the path taken by a sc 3tm6*wffk6 imu9- imonochromatic light ray travelsicm3ik6f6 * mwt -9ufing 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 tra5hm).a - jgjc16d: enah6vd gaveling 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 thwgv :y gr,ki8+e surface of a rectangular block of glass at an angle ork+ , iggw8yv:f $45^{\circ}$. 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 i2 *56 jok9rt nwiv*hx/d w(drat5khu6mp--w a piece of glass. Which t-ow2 /-rmda5*i kxnij9wuptvd k 5 w6(h r*h6one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters thk)jd v u0 bllx5f7g:yy4 (iju7gz ;0eqn41cl te right-triangular glass as shown. The glass has an index0tj4g: yk7(dq 1n5lu l;vef byjixg4 07lzu)c 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?