11.24: Two wave pulses travel to the right toward a rigid boundaryfw6,)npavt *8 y msx,oou7p5h 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 5v68 ,,7f*swoao hypmx)tnuppulses coincide?

  08.30: A light beam passes9.ynqd hlfa;pzz;g p6 3bmpvm8.3t g4 through the air and strikes the surface of a plastic block. Which pair of statements correctly describevqm9myz pz3. gt3b8d .p;agf64ln;hps the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light0 t eyzm:6ej38;7qojwi4wo tf passes straight downward through the point labeled B in the djfy e0twzjo7t4q ; m3e6 io:w8iagram 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 whena.4 4 nwik m03,qprdqvever light is incident on

  05.18: A student hold a hand mirafg4e ( 0n6qkjror to observe 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 mi0q 4kgj 6nfea(rror 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 en iui4 iky7bn9(5ho+k fters a new material. Which one of the foliun5i fbi94hyk7o(+ k lowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm ihw +b qewydli(6* /: 5xj+ 76stmcmdmmn a trad/7 t6emmqy+d h*scmmlbi5 :6 jx ww+(nsparent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed a1qm/ ciw j8hq;nd its:

  00.01: As a wave moves from one me4rnj;c * (ba1 agkwg+gdium to a second medium with a different index of refraction which of the following wave properties would NEVER chang a(wj;ack 4g1nbgg *r+e?

  05.47: A sound wave i j2n2:m z4qejw(e2e ggenerated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound(e z 4 iem2jngqj2w:2e 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 swimmin:9vrqj+0sx ( czuc/hd g pool emits a sound wave that travels toward the surface of the water. In the water, the sound wax/qu9zd +rc (:0 hvjcsve 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,1srfrych+y*v j 4pw 7 rectangular glass block with an angle of incidencerh,rcv7j4wy 1p* s fy+ 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 towardsa1hfww )0bd 0 a point P on a boundary as shown to the rh) s bw1wd0fa0ight. Which segment best represents the refracted ray?

  98.17: Which diagram best represents3 + gqmjgk2me)i 4g,ro what happens to a ray of light entering air from water? Air is at the topmrio3eg ) 4k2+g ,mjqg in all diagrams.

  94.11: The critical anmc( rq5:p+ tjmgle of a material is the angle of incidence for which the mm+q r5cpj(: tangle of refraction is:

  95.12: The principle underlyivi:5q*kb;kp vng fiber optics is:

  98.36: The critical angle in a transparent substance surrounde19cvxdlqmy8u-s+ q2y d 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 refaau.mcm0d*j i :37ygoraction of n = 1.5 to material Y with an index of refraction of nj 7m.aoyc 0ga d*:imu3 = 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 dich)zb,:;h /sgj dd gr1amond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical acs h,r hb/1 )d:gdgz;jngle 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 light xgm5 us 5 5/x4cqsr;qxmakes an angle of incidence equal to 5c5smq4x sg; ux5x/qr$30.0^{\circ}$, 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 embeddedes8 agjz bw bo(8.z:+n in a material of index of refraction n. The laser beam emerges from the material and 8(nszjb+8.ogaz :web hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passe 6 *n)vlnco4 ue*5sxu3ivzf r+s from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (x *cni4+u6*)5nzv3sfleu orvn1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shoye/o 3h*fybyz:k.teu t6l j): wn in the diagram. What may be concluded about the three indexes of refraction, *ye / .hyu)lkfe6 zt:j:yob3tn1, n2 and n3?

  97.24: The accompanying diagram shows the path thatb) t+6,wrq glv a light ray takes passing through three transparent 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 rg) ,blvqtw6+ of refraction?

  09.34: The diagram below shows the path taken by a m -ykmqstunxe4+.v 6o-om -gs7onochromatic light ray traveling through three mediagv .6msk+n yu o-t4e7omq-s -x.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 tr*puyp 3n 6zgel7zk9( gnl9pg* aveling 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/ q hrkwmb1d2/3vp,ew is incident on the surface of a rectangular block of glass at an angle of w 2b em1dhkv,3qr/p/w$45^{\circ}$. 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 into a piece of glas5(pr;:idtg4l *ilv cy s. Which one of the labeled arrows best indicates the path of the light ray after it enters the yi ivd*(p5rl ;t:c4glglass?

  14.44: A ray of monochromatic light entersiyo 4/ms(qa a, the right-triangular glass as shown. The glass has an index of refractio(m/sai ,yqo4a n 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?