11.24: Two wave pulses travel to the right toward a rigi2x/.u69wk3e,l1lv z h3i hpn1ic ypiad 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 of the individual pulses co p6 kph w1ii 3lxne32v1/9aly.c iuh,zincide?

  08.30: A light beam passes through the air and strikes the surcz o yxv32y;ud*xty+, face of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and theuxvo2 zyc*x d+;,y y3t transmitted wave?

  12.02: A ray of light passes straight downward thr,:qq:f(q s f 971epeoi sr9aiekr4yl0ough the point labeled B in the diagram shown. The ray reaches a fyp:r esfk79 :qsle0,4 oqri19(eaq iflat 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 whenxlx 7+ :0n3pl:feo*y ytsf jm(ever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while standi5by3ceoc iw0x-4 zcs+ng in front of and looking into a wall mirror. If shws0cxeyb 345zo ci-c+e 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 tgz++ k3 zn:ghvvyy(8o e1j6mo hat a light ray changes direction when it enters a new material. Wh8gok mj y:vv (zn+g+yo e6h31zich one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has q8l-wwb d swyf *8r:kr3d,du( wavelength 400 nm in a transparent material. What is the index ,*3r(ly ks bdwudr f8-w8:dqwof refraction of the material?

  98.04: As sound travels from steelwih6zl(w he*9psy.3g into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medi ,;s,ps9x fyk 9r(5reuw v (zzbz;s3uuum with a different index of refraction which of the following wave properties would NEVER ch u ,(r; pry9e 3x z;u9sfbkwuzvs(zs5,ange?

  05.47: A sound wave generated from a tuning fo: 9fbrvo5w9l9dtc. .yupxf-ork of single frequency travels from air (with speed of sound 340 m/sfxvry9w -d.to5l b99u .po:cf) into rock (with 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 b;lc9gl +dzg es :.(wom/g 9vpdottom of a swimming pool emits a sound wave that travels toward the surfzg(dw o9gmg+ed;cp/vs: . 9l lace of the 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 burst oy5j ,jmb3c,he+ fxc ;(huzst: f white light strikes a rectangular glass block with an angle of incidence of c 3:e f5zyshb j;xc,thm(ju,+$0^0$. 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 shownb w0x;gs8 nlukgpmn k2/x+)q. to the right. Which segment best represents the refracted rayqbx m/wsg;)kn20 upk .+nx8lg?

  98.17: Which diagram best represb 2-ba3sb.. lphva (rqm67ifrents what happens to a ray of light entering air from wmh-vra q6p.(bl2ab i7b srf. 3ater? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for w4*hrm,4k*6racjzlt ojy xt98hich the angle of refractiotk89jl mox4,zr6*rh 4y ct*jan is:

  95.12: The principle underlying fiber optics ibpc*c k3 sv1+ds:

  98.36: The critical angle in a transparenjfvlrysx b9bel.(4( :bp *gt* 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 mata4(yg+fd. osa erial X with an index of refraction of n = 1.5 to material Y withsa y(4 +.fgoad 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 diamomf 9mg;q.a:34ypnvpq n0 he/and and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52v /:m 3n e;a4n0phpy.magqf q9 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. When the lighto,out 0ix 9(+oz te dwk+:0 ;wj+njyvt makes an angle of incid0jx(nzyw+ t09 +e ot ,+oik:d j;vutwoence 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. qj,ui9w kq t+,The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n i9+tj quq,,kwis:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown in qn+ ryw0;2lththe accompanying figure. What is true about the respective indices 0lnqhw+t2 yr;of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 a)itgx;9d o.2fzkmar ,s shown in the diagram. What may be concluded about the three indexes ofx );fmkg2, od t9azri. refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path)vb j6l ahjh9) that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n)hj lv baj)6h91, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below s3s /rx*he,e9ivny.* .fqndsmhows the path taken by a monochromatic light ray traveling through three media.The symbols qs9.hevm* nx fsne/,.3 i*r yd$v_1$,$\lambda_1$ , 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 traveli1b d 3+f.3mrdazbx*npp 4n3a wy3p* qfng 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 7m meg,-c;tj gt7m4hu6nl-ylincident on the surface of a rectangular block of glass at6e yu g g77lt;,4chm-jt mnl-m an 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 ai ;9*.6 w7dyoumrq hpbgdv+b6kr into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the pd.*bur kbhd9m+6 g76 ywo;q vglass?

  14.44: A ray of monochromatic light enters the right-triaaa:a/jr f r 1l5pk- btm2:4aiangular glass as shown. The glass has an indp5 j 1:rrimaf2kat 4a: -alba/ex 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?