11.24: Two wave pulses travel to the right 0 msl36en; js -ap.nkbtoward a rigid boundary as shown. After 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 0mn;b-ean 3s p sj.lk6of the individual pulses coincide?

  08.30: A light beam passes through the i:n48hpb0p-ds4wt* 9mhi sgaair and strikes the surface of a plastic block. Which pair of m*hi4gh8a wip-4ss:bn9p dt 0statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labele 43)wdas8enx- c+dezld B in the diagram shown. The ray rece+3nds) ae xdw4- 8zlaches 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 light is incik4 7dd;jcxum ,dent on

  05.18: A student hold a hand mirror to observe the back of her heblf2 , o;6p a .fsh:wefmij*4oggdzvfh 04j 66ad while standing in front of and looking into a wall 0 6whlivbeaf:4*gsfffdzj m6g., o4pj6 o2;hmirror. 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 back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a new os4. s4/n h (i24*tx7j tkptijf jx-epmaterial. Which one of the ftst4j nk*x j 4pi/toh47xei2.p f( j-sollowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a trtnck( ; n+ikt:2ygh1 38a.sfj3um ycxansparensg(t8xf myak1:cj3. 2ckh3 nn;u +ytit material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, botzjt )yxa8s /,ipiar ,3h its speed and its:

  00.01: As a wave moves from one medium to a secondd )zbr+enz3y2 medium with a different index of refraction which of the following wave propertiesde r32bzzny)+ would NEVER change?

  05.47: A sound wave generated from a tuning fork of o8mp1g8 6vhd/r8vcrkxl phm 8www ,++ 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 a+pvhx lc8wo,d 8g8wvk/w86hmr+ r1 p mnd frequency of the sound as it passes from air to rock?

  14.28: A waterproof s(o)pnqqc +:g.kz5 odhpeaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water.o: .5hp oz(n+gd qq)ck 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 a rectangular glass b .l l ;wkvj8kkxnii-h3e8+p3slock with an angle of incidence k kjs8hxii3e wl3 .n-l+; 8pvkof $0^0$. 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 :srjv86 w) zrinm,p4l as shown to the right. Which segment best represents the refracted ray? w6ms, r p8jirl:) zn4v

  98.17: Which diagram be9gu*ferq d+z7,cd7ndu8 q: anst represents what happens to a ray of light entering air from w cqu89q+7,n d7u*fad nedr:zgater? Air is at the top in all diagrams.

  94.11: The critical angle of a materim)pc6; cwh-k ))mnz,y7x knfwal is the angle of incidence for which the an m-,))z76 )nmcp ywfchkk;w xngle of refraction is:

  95.12: The principle underlying finj; n r:. 0dpbhiw/7znber optics is:

  98.36: The critical angle in a transparenr:5ak8/i zfxo t 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 refract9lq5h zjse, er7/ yb(bion of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speedyrb9qs( b5le, 7ehj/z of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diaa4ux +t :1thtcjlp7 l7mond and a piece of glass by observing the critical angle of the light in each materia7:cl t u4l ht+t7x1japl. 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. W9lvvg);p o+nar; u 7mlu()o knhen the light makes an angle of inci )9nr o;lka+ 7v;o)vugnpuml(dence 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 en1, ;q d (2b31submci)-mnf yhqm-kzbmbedded in a material of index of refraction n. The laser beam emerges from the material and hits a t qu-2zcmm11( 3synbif-q) nd hb ,km;barget. 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 u g3f9 l:wf5b 2nzuc6pmedium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective in fw5g:93l fu6nc2pubz dices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mediuq( o q)sa2*ysm-r2a udc(j8mam 3 as shown in the diagram. What may be concluded about the three indexes )aadrjqca mo(q ss( -*uy28m2 of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray 1 dlr6;y cv 3u1(ptrebtakes passing through three transpap6r; t l(u cyvdrb3e11rent 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 monock;bs*536z uf:4p8 zxxvsoc xhhromatic light ray traveling through three media.Thszk6;xbv o *xufz xs3:h 45pc8e 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 gr;dfy1er 8lbn*( rc.dlass ($n_g$=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 9za(tkjde+u0e8w* rg incident on the surface of a rectangular block of glass at an a ta*+e8(wgu0rd jezk9ngle 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 +t.2spn foglxb:d1 q( into a piece of glass. Which f s1dlg:qnxo(t.b p2+ one 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 the right-triangular glass u12ndbwe lv+,as shown. The glass has an index of refrdw2u1vb, nel+action 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?