11.24: Two wave pulses travel to the right toward a rigid boundary as8 ,j5nmr l-wgb*c2,opc tp v0 i2z8aob shown. After reflection of the triangular pulse, the pulseclc0j oi2,tz8-5mwagrpbp2nv,*o 8 bs 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 pask2 t3kez 5:w *qil) 5el okdom*d9w.qmses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the ew :2w* lo ld53q*kzqeko)dtm.5im 9 kreflected wave and the transmitted wave?

  12.02: A ray of ligh,k5-zke cesu2xz zi s+(kx4)ct passes straight downward through the point labeled B in the diagram e+sk(5 kzxkxc4izz2, cu e)- sshown. 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 whenevergvi5c538-o *qi5f f62jht cb 6h tvsbl light is incident on

  05.18: A student hold a hand mirror /oaej5yn k :v+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 and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far b:5 k/noejvy+aehind the wall mirror?

  14.25: It is observed that a light ray changes di 6prk*v n4o+2:uo4 tdeix s)cerection when it enters a new material. Which one of the following choices is the term best associated with this phenomen*2 tisop ud 4x4:c6 )veeknr+oon?

  96.19: Light that has wavelength of 500 nm in air has waveleng3l 7s,g4eguv78qmoz gth 400 nm in a transparent material. What is the index of refraction of the matero s,7ue3gl mg8v4 z7qgial?

  98.04: As sound travels from s l*,n ,4bxqxkxteel into air, both its speed and its:

  00.01: As a wave moves from ppe;/ y;t- m+ft0xlwyone medium to a second medium with a different index of refraction which of the foll+fty yw;e-x/ mlp0t;p owing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travelk1;c:9z 0 wjtqj,rtuvs from air (with speed of sound 340 m/s):z ,rw;9tjc ku tv10qj 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 swimming pool 8kxg *r u)rao+emits a sound wave that travels toward the surface of the water. In the water, the sound ax g )k+*8ourrwave 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 recocm 6 -pp+s/pk j.olw*tangular glass block with an angle of incidence of p/k o om-6*ps+c.pw lj$0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is direc+lyg 1nt vlrqn- p(n;(g/lq4 lted toward a point P on a boundary as shown to the right. Which segmen l+; (l (nrgllg1-qn4 /pqvytnt best represents the refracted ray?

  98.17: Which diagram be29x8 2ehkqgr wst represents what happens to a ray of light entering air from water? Air is at the qke9 h228x wrgtop in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which ,3zyg9 knp wp 7)iq)fethe angle of refraction p z e)9ygw7 inqfp,)k3is:

  95.12: The principle underlying fiber optics z9r:yxdqu, p2is:

  98.36: The critical ao4r :;. 0bub0 1g ;*xhcwznwemfubb*ingle in 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 X0 wzfj rd+6aa/ with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If thj/ 0azda fr+w6e speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish bermr/gktq5 )*pfe n83 atween 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 haskeg8n/5 *) afrt m3qrp 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 materik p0: mcj03+kw7wvzbc al. When the light makes an angle of incidence kckwpcm:b0wv 0+ jz 37equal 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 l,5biyac+ +9 lt ;2uqty,ynlfpaser is embedded 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 parameters 52cabl+,n , yyit+tylf up9q;of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to mediusqddc;ap9x; kv2z+ u0m 3 as shown in the accompanying figure. Wd0 qp9+zsv2ck ;a;x duhat is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from tv.x(m q5*:ycv dnwn6medium 1 to medium 2 to medium 3 as shown in the diagram. What may b.ycnqn:mxw*t d v6(v5e concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes pass0gkh4f c g;c45 0(bsuwgbl0 cxst:,zting 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 rbfk50cz0( g0 lx4,bhtc:g4swctug ;selation between the indices of refraction?

  09.34: The diagram below 9 k,3f+)z l(ugg5ep(wcj 7j *hfaaaohshows the path taken by a monochromatic light ray travelinkf9a)gcp gelfhzj+w( u a3a7*(,j oh5 g 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 glazu *r8jkdf-l(llp 1o wqap0)0ss ($n_g$=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 a rectangul390k; gz ci-ugv :wb6(oswogvar block of glass at anbg90w ug3ozsgokc; i(6v v:w- angle 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 piece of glah- kg/,6stdr xss. xh dg6 r-k,ts/Which one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular gla/en 2 c5zifc;sss 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 t i5 ;/senzfc2che light after it exits the glass?