11.24: Two wave pulses travel to the right toward a rigid boundary as shqxa32ou is3 n//u9l l kk;z4fiown. After reflection of the triangular pulss3z lk; ui/4ifq2akxo l/9un 3e, 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 passes through t61p b9k q1+ lym/rbx0i th(jxjhe air and strikes the surface of a plastic blmylbqrj j+kxp9(6 x b0h1/ i1tock. Which 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 thdvc o 8f2xo;)ulhhx 9;obe .:ae point labeled B in the diagram shown. The ray reaches a flat mirror placed at an anglefxbhvdlx8o 9;eah :;.)oc o2u $\Theta$ 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 ag9r)zs 4wc:+;emzer*c10gza 1gsev kh ,6 qrwhenever light is incident on

  05.18: A student hold a hand mirror to observe the-hzq/553lbyrjsh:./mc5zaf yu tez( 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 mirror 1 ft behind her head, she will see the bachr( 5 5jftbhz ecy//zu za lm.3-qy:s5k of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it o2,l+k bwq:qy enters a new material. Which one of the following choices is the term best associato2ylb+ qqk:w, ed with this phenomenon?

  96.19: Light that has wavelength a45gi f ..m mx ;3bvdon/j-pbdof 500 nm in air has wavelength 400 nm in a transparent materiagn/m dd.b;x4m-p3v5a b.fijol. What is the index of refraction of the material?

  98.04: As sound travels from steeju-v3g +r+-ecdbg ck/l into air, both its speed and its:

  00.01: As a wave moves from w;2eyp d6d2eqp3 vxxs6l6b 5 oone medium to a second medium with a different index of refraction which of the fpp 62 63xy5wl2vs; boxed6d qeollowing wave properties would NEVER change?

  05.47: A sound wave generated from aq2.zng 0ka p3omj)h+ ab1gg,u tuning fork of single frequency travels from air (with speed of sound 340 m/s) io2gha)q g. u0bpaznm1 g, +kj3nto 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 bottom of a swimming pool -u s3qbgc3y4:6 f pikqemits a sound wave that travels toward the surface of the water. In the water, the sound wave has a fre sig3qqk:3u- p46cbfyquency $f_{water}$, 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 e5 swob wz920 3qcla8kan angle of incidence wb98ca3leo 5q k2zw0s 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 boundary as shown to t1+me( 7+gnqaarb 5xp mhe right. Which segment best represepq( 1bn7 m+ am5axre+gnts the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering ca*nnh f8+hlg+c8, q cair from water? Air is at the top in all diagrams. hncfn,g8c+*c hql8a+

  94.11: The critical angle of a materfd00ajz m ln07ial is the angle of incidence for which the angle of refractifz j0n 00l7amdon is:

  95.12: The principle underlyinv 2qwh *o.g.ks/jaqpizd).2.mqv3k wg fiber optics is:

  98.36: The critical angle in a tranrbkti91soaqfm)z8 fi 27y 0+gsparent 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 fromd gz4ercj00t2 0 2rrag material X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in ma00g4zgdrtc2a 2ejrr0terial Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a dqnch8u f6d(u9t4;zup/cj - vgu* 1s igiamond and a piece of glass by observing the cf gu6p9uuq 1*n (isu4ct; gvhjzd/c8-ritical 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 z n5ei1a unry;. t01uyo1s1hfinto a clear material. When the light makes an angle of incidencif ;z10 1n u.51snhoryy 1tueae 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 mater4olts 2f(pt xtk a2xuw;84+n aial 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. The value of nt a(4x kw4ft + n2ptaux2l8;os is:

  95.31: A beam of light passes from m2wf* fqgkle r8-.lmc*edium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about tqr-*lwl f. e8c2*fkgmhe respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of lightjoh- 3., ownd/ 5h51htvbxym w passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be conct.-wxm5b3od,jyohn / 5 1 hvwhluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thatufw/qfvfv;7 m2ob)kyx5 / 3sc a light ray takes passing through three transparent materials. The indices of refraction in maty;v/wk / 72csou5qvbxfm)f3 ferials 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 rm7p. 5zxwzf+ ea--zuray traveling through three media.The srw- zz 7emup+f5a.- zxymbols $v_1$,$\lambda_1$ , 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 e m.j*z+d pde,/il ie4in 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 the surface of a rectangular bv*v8t yny,. nfckusr,g- zu- :lock of glass at8y.vn ,:yr* fzc n,u utskgv-- 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 aid9)wswi6 g*ripa r/4fr into a piece of glass. Which one of the labeled arrd/gp aif*s w)r6wr9i4 ows 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/ ebcr,y+pb 02yqeyr2 as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of +/2 yypeqebr20 y ,rbcthe lettered rays shows the path of the light after it exits the glass?