11.24: Two wave pulses travel tleqpiu9 517 ugo 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 g liup7e51q 9u the individual pulses coincide?

  08.30: A light beam passes through the i n/:gm-k+r:d.n0i ba;sn ckxair and strikes the surface of a plastic block. Which pair of statements correctlyrn. ni:bg;/k-mni+cs 0xkd:a describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in tlxn rr 84-r7jlmgb*)*o 1zl 34troesc he diagram shown. The ray7-l 4rl c*xo1 n3o r4b*z8gjrte )rlsm 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 reflectioa)l;v2x,* *u9 pb+zrp(is odtve( prin occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe*6h:rn1vnu++bw y;qy:mgw y x p;mr(s the back of her head while standing in fronym y(vmyr+b:;6+pwn;wrq ug*nxsh 1:t 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 back of her head how far behind the wall mirror?

  14.25: It is observed that a light r*oc+l xd) x7niay changes direction when it enters a new material. Which one of ti x*c +xldon7)he following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in asp c fw4l2v. pts y-qndc8+q:9 transpady+q -v :qp2 tc9cwsn84lfps.rent material. What is the index of refraction of the material?

  98.04: As sound travels wl*s 2 k.,mx e:jagl(xfrom steel into air, both its speed and its:

  00.01: As a wave moves fri6d0ttcsm 7e 3om one medium to a second medium with a different index of refraction which of the following wave properties would NEVE6 3i7st0dtec mR change?

  05.47: A sound wave generated from a tuning fork of s a )jefn xohfsc ;.:sv66do:c3ingle frequency travels 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 air to rovso;x ce c3d.fj :hf:6ao ns)6ck?

  14.28: A waterproof 9 4caghnq2-qsg 5zrzi .hy0*ospeaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a frequency 25 oahqs90-4gq* h gnzcrziy.$f_{water}$, 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 an+ jugk7pr; i8c angle of incideng8 iu7pr;+kjc ce 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 s9. *w gqxi hz+ru+c yj3bdv)6on a boundary as shown to the right. Which segment best represedvr+b)jx93 scuh6.gq + yi*wz nts the refracted ray?

  98.17: Which diagram best repr(sw88fb ; ktrhesents what happens to a ray of light entering air from water? Air is at the top k ;fb s8t(h8rwin all diagrams.

  94.11: The critical angle of a mater-6z,)hewzi3 w *dai(giiu) brial is the angle of incidence for which the angle of ziib)6g3waiz) dur( i-h,e* wrefraction is:

  95.12: The principlea+ dcf*a1c:ooy e5 4df underlying fiber optics is:

  98.36: The critical angle in a transparl7ut hq pic-9uo/5 f*ient 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 fromq4q t u038qx2a8:n wctxzxm7v 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 liqv0nxx: t388xzc2t4a 7uqm qwght in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish betc nf*ps-;uf2cween a diamond 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 fc -;*u2npscf 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. buw;i m+ ub ll;cx1+l-When the light makes an angle of incidence equaliu1;l+w; ul+ bbxm-lc 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 material of ,fvo.v 0x0u*7 m2zsugxkk v+nindex 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 targko.fs 0,vv*xmz7xu+un 0k v 2get. The value of n is:

  95.31: A beam of light nlz sff3c-:o 3passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respf3f:l-on3cz s ective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medswuwf+i8 p 2 rg3t1(fzium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3i1z82 3(pfsuw+ gwtr f?

  97.24: The accompanying diagram shows the path th.k q,+w pzehh-i3kx).i- heydat 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 o-, +i3 d .ph wex)z.ikke-hqhyf refraction?

  09.34: The diagram belo(u5 hoc/jvj8 gw shows the path taken by a monochromatic light ray traveling/ u(vjj gcho58 through 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 in glaub l f/9m3 sg-*xqir8hss ($n_g$=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 s0k2 ls4hbj*fp gw6w9 qurface of a rectangular block of glass at an angle ofbjk 9h2s*pfwg604q lw $45^{\circ}$. 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 600a y5p e.oiqlu24p7y5j nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicatesj25y7le pa.5oyup 4i q the path of the light ray after it enters the glass?

  14.44: A ray of monochromatkr ak*2 )blbi-ic light enters the right-triangular glass as shown. The ib)*rklb-2k aglass 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 after it exits the glass?