11.24: Two wave pulse ni y/eacdi sl;w64f-*s travel to the right toward 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 of the individac -yid e6f/sl; *i4wnual pulses coincide?

  08.30: A light beam passes through t/za pm 3qudw 27 cjg7z*uwoh v0-f/7erhe air and strikes the surface of a plastic block. Whichj/f 7a oh7u/* ewdrgw2pzzm-c0uv73 q pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through tc*41wmw .0m7-k ) oto shjzc3b g*umgyhe point labeled B in the diagram shown. Thm-4z)tgbwsc.g3h jk 1* 7uy0 *om wmoce 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 light592whoopryqcd7g; .z m-pos, is incident on

  05.18: A student hold a hand mirror to obs b q7pui-xee nhvn/ll 02.)4aferve the back of her head while standing 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 mirrore 0)ie2hnuvl. qbf nlx/ -pa74 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 u:bb x3zd jt*p aoh)67when it enters a new material. Which one of the following choices is th3ptob7)jh 6u* bx :azde term best associated with this phenomenon?

  96.19: Light that has wavelengt4c/v*1aojh t+fi w/ zjh of 500 nm in air has wavelength 400 nm in a transpar h/i ja+fjov/*w14czt ent material. What is the index of refraction of the material?

  98.04: As sound travels from steel in wo2ddu ,v95gito air, both its speed and its:

  00.01: As a wave moves from one medium to a secl(j 7o(d6-dsr6zog xrond medium with a different index of refraction which of the following wave propertieolsddr o66 (7z(r gjx-s would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency tr ig28-km-e-.l b wqw0kaq ykw3avels from air (with speed w0gbim yl-q2k.w q8eak3 k-w-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 from air to rock?

  14.28: A waterproof speaker placed at trvjxf l471d d)he bottom of a swimming pool emits a sound wave that travels toward the surface of the wa7rd)dv4 xj fl1ter. 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 blocksvjk 6yz -v.d. with an angle of incidenck.-6 v.vzjdy se of $0^0$. 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 boux67,g xfv g uy ;+cgyysu(uz/1ndary as shown to the 1 7y;xu g/u+ (6gyvsc zfgyxu,right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a rak. )vytv+h hq0 -nw3ziy of light entering air from water? Air is at the top in all dtwh-.3zqv iyv k)nh+0 iagrams.

  94.11: The critical angle of a ma)ti.x upa, i2kterial is the angle of incidence for which the angleiat.ixkp2 u,) of refraction is:

  95.12: The principle underlying fiber optics 9un :rp(ewwk+f9 f6ziis:

  98.36: The critical angle in t9oaof+v bp(.1u kkwkn*b4 h7sc ,iv:a transparent 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 fromvk3qd ,nx jmc3gc is6lfi3i3wg *62vo;f6 3hm material X with an index of refraction of n = 1.5 to material Y with an index of rg di;fv3* 3 wkcoqf633 263 mm jsgi6h,nixlvcefraction 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 a7s 2lu4yor,v5u6 vhcund a piece of glass by observing the critical angle of the light in each matery rvou6l u,h247sc5 vuial. 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 int6jkyxmywk8-,d 39 /u cjmd6gxo a clear material. When the light makes an angle of inci x 38jmy66mk/d cjxu-9,gyd kwdence 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 a9b0iwv)nh l:udpl 0((j q rtk8 material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying fldwp ur8bj0n(ki0l hvt) : 9(qigure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light wb :l.; tzpydshl,8j;passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respectityhj;s 8p; z:l.wdl, bve indices of refraction (n1, n2, and n3)?

  00.14: A beam of light paiyt )*bpsw d 3(e7et;lsses from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of ref)dt3*iwlse;b t (p7y eraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a ligp: g edmfkd,nym. y/;e ie1e36 jmh5e*ht ray takes passing through three trmep*.fk1h;5jy ,i mde :3n/dy 6emegeansparent 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 monochromatic light raytxwsq tkm4*j) p-g3 u4 traveling through kpxs)g3wm- 4qj t 4u*tthree 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 traveling in gcehm+s)j9pn1 r7yj7 m lass ($n_g$=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 a rectangular blocdbqo2 4i qy )tea6u,d7k of glass ye7td)2du,6i4 bo aq qat 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 transmitte9qc) h,eyy3cl l/4fzft/ 54sq4uafw bd from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after yw 344qzcfctq5a4,u f h )sf ylle9b//it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as siqbuv c,uq0:66n 3+w0el xuq 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 the light after it exits the glassuux0uqec3:q 0lnv siq 6w+b,6?