11.24: Two wave pulses travel to the right toward a rigid boundary asn53p z (os8jvy 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 of the individual pulses coi3z ojn5(sv8pyncide?

  08.30: A light beam passes through the air and strikes the surface of a plasti m4myz et0*uz3tb5ab3c block. Which pair of st3b0z4zmey ba35 t*ut matements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of lighs +s7i e gpqvuij4qly m8y/ :z7;;rs;kt passes straight downward through the point labeled B in the diy;;qvu7irqi7l;ssy se zpkm j/48g:+agram shown. The ray reaches 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 iaqt18 r 4;a5qt)/iiar odx0pgs incident on

  05.18: A student hold a hand mirror to observe the back of her head while st ye+ x dij5hnf+sva.4u7t y9-kanding 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 back of her head how f-v.e y5jnxsy9t74 ++fkdahu iar behind the wall mirror?

  14.25: It is observed that a light ray changes direction when i (r8da(s s s5rjmv,.mjt enters a new material. Which one of the following choices is vr a dsj5.sm(mj8(,rsthe term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength(8we b *uy r5 w2untrh*+y8umj 400 nm in a transparent material. What is the index of refraction of theejru( uy5wy+n2 h** r8tmuw b8 material?

  98.04: As sound travels from steel into air, both its t1hs kq4ipq9e9 )o t4zspeed and its:

  00.01: As a wave moves from one medium to a second medium with a diffe2 p zrtrk4*q+wz7 v60+jnisqf 8z 2- mmubv8mjrent index of refraction which of the following wave properties would NEVEzm4mi*8u+m80- jvzp 27wjnq+t k6v r f2bqrz sR change?

  05.47: A sound wave genh,ojc4bz 7r hog) t 7sw+/;jaserated 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 frequency of the sound as it passes fs; boz+t7j4h/w)r ch 7 s,ogjarom air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits aeylu92p 9 8bgrwg+uzgw01i 598 cq jna sound wave that travels toward the surface of the water. In the water, the sou998r 2l08p jg w5zwygnug9ai1 uqc+bend 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 block with a xz)oo,8jgb oc a7:rb3n angle of incidence o,b)ooc:z3x jr78 a ogbf $0^0$. 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 .e3e/2-yc57.r j gjtg yckjkn4u z*c dshown to the right. Which k* y jj4.- j g enky/cderc752gtcz.3usegment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering nb; *.adf0g ;wu-yqjj air from water? Air isfg;wb;u a0* -nj j.yqd at the top in all diagrams.

  94.11: The critical angle of a material is thea 8 tpi dkb.-2)*a(wocl,wqri angle of incidence for which the angle wpc*), b d a l8qii2wr(-a.ktoof refraction is:

  95.12: The principle underlying3+texy4 a.l)d3ri ztgly l6 *y fiber optics is:

  98.36: The critical angle in a transparent substance su -y))xegzqv yuh,90xt6rkc r:rrounded 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 refra/,qvjfzv;86jn a-e lkction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the sjzl 8jv/eq6vf-;a kn,peed of light in material X?

  03.15: A jeweler can distinguish between a diatdnjtle+ )r18mond and a piece of glass by observing the criticat)nejlr d+1t 8l angle 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 from air into a clear material. Whaay ened)v( yfo-26(ken the light makes an angle of incidence eqd(2)e -6k afy(aeyn voual 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 anl (o;t sc1ap -e*9zlv material of 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 laser and target.;ct*l-9 ap nlvz(e 1so The value of n is:

  95.31: A beam of light passes from medium 1 to med,kga j(; ;gfgfium 2 to medium 3 as shown in the accompanying figure. g,k;ajfg(f; gWhat is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from mediur3qekhvjs(v-*1ja k; m 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 n3qhk r -(kavs1* j3ev;j?

  97.24: The accompanying diagram shows the path that a u+4wouk ord7fa ;lnec t-j-4 .light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, aeto+4-oc; .da-f4 u7ruwnj klnd 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 takenb-p- lvkexv ,g4oj8l9 by a monochromatic light ray traveling -vpl4-9ole j 8bgvk,xthrough 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 travetgx,i1 a/ki l+ f1ax1zling 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 incidentqyyerv6ra3 as3- wtw6) rmz0 5emp+p - on the surface of a rectangular block of glass at an angle ofqm--5 a30 6t+s vmzpyep6rywea)rr w3 $45^{\circ}$. 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 q74 xo13v4r em0ukqwvnc5d 8wis transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the lig1 mevrxwu48k3n d c0v5 4qowq7ht ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-trh(/-dp p fkck)a-x gtjgm1 7g-iangular 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 path of theg1(hk kjga-cx-/d -gf pt pm)7 light after it exits the glass?