11.24: Two wave pulses travel to the right toward a rigid boundary as shownr2yw2vp bx3 id ma*p54. After reflectdmy3b i5v22p xp a*rw4ion 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 coincide?

  08.30: A light beam passes through the a nzo4c 10pjsm:ir and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmittemcn1j04o pzs: d wave?

  12.02: A ray of ligh:n;meoqd;k x0+cyb4 n ht1fo+ t passes straight downward through the point labeled B in the diagram shown. The ray reaches a fl+o: ;1khfn0no+cydbtxeq4; mat 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 is incidenf grg (p;d6oq8t on

  05.18: A student hold a hand mirror to otaea80v 8nl t,bserve 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 hn0 a,8ea vlt8tolds 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 b:(cl th cq-j.that a light ray changes direction when it enters a new material. Which one of the following choices is the term best assoch.l q (c:jtb-ciated with this phenomenon?

  96.19: Light that has wavelength of 5zru +z19hgaff16t cie966 v oj d+umt-00 nm in air has wavelength 400 nm in a transparent material. What is the z1vug- 6e iu+6totrfz cad1j 6mh+99findex of refraction of the material?

  98.04: As sound travels from steel into air, gm*( nx6f. qw(g8lcd fboth its speed and its:

  00.01: As a wave moves from one medq.;w neb 5ge)jnvv6;wium to a second medium with a different index of refraction which of the following waveeg n)eqb;vw5vj6;. nw properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency tra9 yl7xfuc.s u2vels 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 from fy9ux u.7 2lcsair to rock?

  14.28: A waterproof speaker placed at the bottom of a sop9)7 mmt7 sr rnm6v48cgj9o gwimming pool emits a sound wave that travels toward the surface of tpj4g 7mnts7r 8c )ovr o96gm9mhe 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 of wh wvc o*pd0/qv;tv; b6uc7yt2dite light strikes a rectangular glass block with an angle of incidctv/vu;ow; dy 6 2b*pq vc0t7dence 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 asi998a oxy lr-e9g gl9o shown to the right. Which segment best rep i9yoxorg98 gela9 l9-resents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of yc/ he/;xnhv55ph d0 qlight entering air from water? Air isdhhhp y5/5/x cv e;q0n at the top in all diagrams.

  94.11: The critical angle of i m1yjlm99wxth,64mu e-/qba a material is the angle of incidence for which the angle of refracti,9q6m 4mtmyu 1hj x i9a/blw-eon is:

  95.12: The principle underlying fiber optics3 9d;( wsogzmrwr)k2a is:

  98.36: The critical angle in a transparent substa1dotfl8fpqn. 6.: jl3bxhzf /nce 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 material X with an ikh/(uo o0qi 9yqc+;h sq-, zvf6(iftendex of refraction 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 /fo9ouy+;kqs(0fc ziihq et,q(v 6 -hthe speed of light in material X?

  03.15: A jeweler can distingd +9+g+7 dnjjdb qai*huish between a diamond and a piece of glass by observing the crh 7j9+d+gbnqj aid d*+itical 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. W9mnkqo18gt g/hen the light makes an angle of incidence/ noggmk9t18q 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 cfj1 jvlj9xapa *6.12b.xurz in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position f6 9 l.1* 1xpuz.bjr2jxaa jvcparameters of the laser and target. The value of n is:

  95.31: A beam of lig5ab 7d4d dta*fht passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the rebafa457td dd *spective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3qhlzu7oph r0k2v ,y644 ep-xl as shown in the diagram. What 4 oh x7 pprz6v04hllk2ueyq-, may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing.fsr1ljm,1qtmg 1 (gi through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of ttj,s1 1g(ifgm.lq mr1he following best describes the relation between the indices of refraction?

  09.34: The diagram below s)0xcsv2jc3fz: a wui/hows the path taken by a monochromatic light ray traveling through three media.The symb j)3cca/ zs x2wivu0:fols $v_1$,$\lambda_1$ , 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 lighw5wdn +0dyw gb+f)5or t traveling 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 incident on the surface of zg*47g )wkdr v9p+x ema rectangular block of glass at an g)xv7zdwk rmg9e +4* pangle 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 air into a piec- j(hofm jd1u)e of glass. Which one of the labeled arrows best indicu md jj-oh(f)1ates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light -dnsu,l2k: yv7lqc57h semq) enters the right-triangular 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 the light afd7l l)n:cshyu k2e5qq,-smv 7ter it exits the glass?