11.24: Two wave pulses e :b*+*1x vklp7xpxiu 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 thex**+x7 1 pbipkevu: xl individual pulses coincide?

  08.30: A light beam paz.2u 9d vw-nqer0c) *n dpfu0bsses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes thfqb.-ed u u*cn92rwv)0 dznp 0e phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of lightq+38 fo)8x9ofacp/ a yct csa3 passes straight downward through the point labeled B in the diagram shsa ) 3qo faacyfc/ t889c+xo3pown. 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 whenever light is incident sj25w9 b2 oojvon

  05.18: A student hold a h(/azfa 3a)5r2f cq zssand mirror 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 mirror ansa( 2 czrf5q 3)afa/szd 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 lightxv+nq/-d m ,xl ray changes direction when it enters a new material. Which one of the fv/xn+l x-,q dmollowing choices is the term best associated with this phenomenon?

  96.19: Light that has imtwe7h r9f2 6wavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of re2ih97w 6mtfthe material?

  98.04: As sound travels from steelqe+gw8 zgl s28jl0+ zw;r5b ps into air, both its speed and its:

  00.01: As a wave moves from one medium to a secon ;bvhz u*l)bh8d medium with a different index of refraction which of the following wave properties would u* h)z h8lvbb;NEVER change?

  05.47: A sound wave generated from a tuning fork of single 0hn (c4h om ;noebx57m;f4 7h;alvq qrfrequency travels from air (with speed of sound 34;m;vchn5(hhef lo7 o;0 qbm474x rqan0 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 the bottom of a 1- xdh(ha.cd)9a ybuckg3u*a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sounh-g39cydbd k(au.*ax) u1 hc ad 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 blocnmx)flync-j83d on 6. k with an angle of in. ln-ndn36c)m f 8ojyxcidence 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)qkkrfq of+5y 5/u0qj-t wax6 to the right.x-uy fkj) qtqf 0a6 /+or5qw5k Which segment best represents the refracted ray?

  98.17: Which diagram bnb;-i-xhb8kn; ar* yb6;xcv k est represents what happens to a ray of light entering air from water? Air is at the top in all y nbhrncki;6b -8x;a; xb- *kvdiagrams.

  94.11: The critical angle of a material is the angli0ljyqee +w6 4e of incidence for which the angle o6+4yjl i ewe0qf refraction is:

  95.12: The principle underlying fiber optics fsvmn4(otiwy 8;9g2 w3jx0ehis:

  98.36: The critical angle in a transparennd mlhj6x (a.5t 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 an index of refraction35 lzml4pd3. w*nl *vcn uixt1 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 the speed of light in mater1cwi *tl.53 z*dvn3l pul4xnm ial X?

  03.15: A jeweler can distinguish between a diamond and a piece (a f -:fdd,owl7uvhs3 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 angleou vfwsdd3, f-:l(7ha 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 aj* igbzfys* r*v r,,.n clear material. When the light makes an angle nj *.r*f,sigbrzyv, * of incidence 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 *9-z3m vbs/f/gfojh. iie 4gr:e;e bya material 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. Tvhezf/r9f*jb. sbm34yo giig ;:e- /e he value of n is:

  95.31: A beam of light passes from mediu43; fo b7mwhalgf *xs/m 1 to medium 2 to medium 3 as shown in the achoxg 3f;b7sa m4/l*w fcompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mediumpfbjkwv( l*:2 3 as shown in the diagram. What may be concluded aboutv l:(p*fk jbw2 the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a ligz5sr3x(x: kqqd sr ,rk0*ri:lht ray takes passing through three transparent materials. Thex3 z :qk:,kxdrsslr(ir0* rq5 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,4jtxzu o-pv h. j2p ujcv7d)( taken by a monochromatic light ray traveling th vh pjo,.u jt2zdj4c xv-u7)(prough three 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 ine-kg-qt5yb6bcp 30)3oiow hg 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 oub/typ0 )d f7pf a rectangular block of glass at an angle b/t0 )pdf7yupof $45^{\circ}$. 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 wavelengtsf8xw(*oc :du h 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 enters the glasfdx*os : w(c8us?

  14.44: A ray of monoc9.64xn:cy:xjpodyoe3 (t. 4jpokv-rcw e z)whromatic light 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 .cepo dxey4cytjkjwx-6 ).v4: przw( : o3n9oof the lettered rays shows the path of the light after it exits the glass?