11.24: Two wave pulses 5h)bl s0vm) pd-hqca)travel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the fos- qbv)l d)h5cm0h ap)llowing pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes throuo;k x) xe.np9qwun.(iqc bl xqa 8g3.*gh the air and strikes the surface of a plastic block. Which b 3).xe oqn.(l;wxq gi9up8kx *q.nacpair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pdjmjf 5 4p.pl6rm ny;/asses straight downward through the point labeled B in the diagram shown. The raj5dpm6. y;/ nmp rj4lfy 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 reflectio;ya7zbf5 jvq4mws c0, n occurs whenever light is incident on

  05.18: A student hold a hand mirror to observejb,xpq0xsw90m w dy7ia*i (c6 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 mirror* 0 ci6xy,x(7iaw dm0jqw spb9 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 dia mt 8m5s) y3zi7t;fknoa)nb +rection when it enters a new material. Which one of the following choice)ansyk+5fz8mb to a)t 3in; m7s is the term best associated with this phenomenon?

  96.19: Light that has wavele2jv hxi* qt*.mngth of 500 nm in air has wavelength 400 nm in a transparent mat** .tviqjxh m2erial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, bot4qk jqc:q3q 9g-efv zr;;c6;i5 qqeydh its speed and its:

  00.01: As a wave moves from one medium to a second medium wioxxd6d 2/lm) u0.gj9s9 lak kpth a different index of refrac0dsglk /)j2mpdako9 x6.l 9u xtion which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork ofgg7ow8 uhb u;6 single frequency travels from air (with speed of sound 340 m/s) into; u8ub7gw6go h 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 speakercaa etfa/ ut 4bf+t:xqx/4;: a placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In ttat+ aa b /u/4 fa:cx;4:eftxqhe 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 strizo sgmr)-b.;(qx sxf:kes a rectangular glass block with an angle of incidb)mx-:of xzgrs (qs. ;ence 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 pointj mit sn ))sh)dql:xi aiyc06+p6k5,n P on a boundary as shown to the right. Which segment best represents the refracted )a6 m6yhistlkd0 c5+isjqnx:pn)) i ,ray?

  98.17: Which diagram best represents what happens to a ray ofjd800 .rbsn2,eq/ m vlk+wz ma light entering air from water? A,kb+.0leqz /mvj0 swmdra2n8ir is at the top in all diagrams.

  94.11: The critical an2-6/i(6 ,ogrxo6ie v p qpxynngle of a material is the angle of incidence for which the angle of refraction o yi,pq66 go xx(-ir/ penv26nis:

  95.12: The principle underlying fiber opt73vksyu1c95 x-l:m;nnt v zdfics is:

  98.36: The critical angle ise,qwkib+r *:bcyxznh a 7qu.pa o22h.o8;2gn 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 from material X with n(m vcxoc. 2+d4n5 adqan index of refraction of n = 1.5 to material Yndv5 noq(dx2a+cmc4. with 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 diaw 7wxjm.e6gy 3mond and a piece of glass by observing the critical angle of the light in each material. Glass withj3 w76emywgx. 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. Whr5;ws sf)pxo kp2e1d j0hp0(pen the light makes an angle of incidenc 0r1d hp peopxpwj)5fk s0s;(2e 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 lx)2cy0 evv ky3aser is embedded in a material of index of refraction n. The laser beam emerges from the material and hiv20v ke)xycy3ts 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 passes from medium 1 to medium 2 to medium fdcn.0 +p:jhx3 as shown in the accom0:fxpjch +n.dpanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medwub6elw.j 8 6g 93 (cykq0nu(xw kiho;ium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refractg3uqwlu6( n0yeochw j 98.x6bwk;i(kion, n1, n2 and n3?

  97.24: The accompanying m n thg d;bsq0(qb2;9vdiagram shows the path that 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 dbgs t0q9qbdm;h;v n2(escribes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochro44xc a35 bxrx5jc.qx 1zz7fqtnnjq*: matic light ray traveling through three m r 5:cxtx qczqabnf7.5xj4nz3*j1q4 xedia.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 travelaaf m)k; -gci;ing 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 surfacycx ffs81da.ux d2g .orm+,m5e of a rectangular block of glass at an angle g81c2mmf u x5saord. .+yf d,xof $45^{\circ}$. 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 wavelengtx2i8xxy. 11yuv tp.g ph 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it ent211x iyyvxxg8ptpu..ers the glass?

  14.44: A ray of monochromatic light enters the right-triar ( 4pj;/gkuwxngular glass as shown. The glass has an wx;p(gr4 /ju kindex 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?