11.24: Two wave pulses travel to the right towas(j3q)hk / vapvz i+a3rd 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 the individual pulz+avhjvap33/ qs i)(kses coincide?

  08.30: A light beam passes through the air and strikes the surface owxstsb0qom7e 2 19 ;jvf a plastic block. Which pj92oxt0qe bm7 ; vws1sair of statements correctly 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 is 0eyd(7 +v,six- vg4sr:fmcfn the diagram shown. The ray reaches a flat mirr7+rgxs0 4i-yv fv,fmce: sd(sor 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 ligvqxa o 6in.j*6z;ts8qi k0g6qht is incident on

  05.18: A student hold a hand mirror to observe the back(g nx3x;-nf+uow/ qbr of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft innfb+gnq-w rx/3; ou (x 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 ray changsk;r+*z6co,hq f3esq es direction when it enters a new material. Which one of the following choices is the term best associated with * s3h q6;+kqersoc,f zthis phenomenon?

  96.19: Light that has wavelength of 500 nms::ab ;. :xt kr:w+)ehr.,rmxtcx -d-umx hkh in air has wavelength 400 nm in a transparent material. What is the index of refraction of the -:xc, mh atr:hd-e:+xrk h.uxwrk.bt s;m)x: material?

  98.04: As sound travels from steel intp)hwn2 fdrcy9 *2hp o0o air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with ac,y m b-lzbyr: a/67ym different index of refraction which of th- 6b/mym a,ybzcylr:7e following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequen7tfr:;g h kkr0cy 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 war krh:07tf gk;velength 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 emits a soundz5c1:ywg 3kwli6y6t d wave that travels toward the surface of the water. In the water, the tz 15wy gw:i6cld36 kysound 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 whity ra3e: 5+yp3x+gidjv e light strikes a rectangular glass block with an angle of incidenceyvp+x eg 5dy3r+j:ai3 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 direa36+ uywdk xghfk3 z7(cted toward a point P on a boundary as shown to thex7a+3dg( kwy fu k3zh6 right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering airpkhncdu .1 t+a qf;,)u from water? Air is at the top i1)d;ka u,ht+ nup.f cqn all diagrams.

  94.11: The critical anant( .y7,mu cogle of a material is the angle of incidence for which the 7amu ., n(cyotangle of refraction is:

  95.12: The principle underlying fiber optics 6l5 bsl 81chz/dmtc q3is:

  98.36: The critical angle in a transparent substance sur368d, y nzl0qwgo1bjs;bizl2 rounded 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 refractiys n2n nt3,4c; jyap,kon of n = 1.5 to material Y with an index of y,cn3k tynjna ,s24;prefraction 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 diamond and a piece o6d8o6e u8nug uf glass by observing the critical angle of the light in each material. Glass win 6og6d8eu 8uuth 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. When the lz x v6.iq-f(ivl1lzi2ight makes an angle of incide( z-i 2vv61ql.zlfixi nce 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 a material of index 4fc po)9u,f3q2ekoinof 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 targfu,2epf3o ick 4qn)9o et. The value of n is:

  95.31: A beam of light passewptdonmny(b4c+0 xf *,r.q2os from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is t (tpqbw. dno*yrf,4 nx2 +co0mrue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light+l -*r3rudsuawu0q 2o passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three inw0d o+r l2u-*q 3arusudexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes pas gx7 e648v7qv 8 gh/hwkfm)agfsing through three transparent materials. The indices of refraction in materials 1, 2, and8wf vk7gg8q/64v)hefah x7gm 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 patuks- d( ro vw6igv6*i)g 6fsm4h taken by a monochromatic light ray traveling thr6w-( * mvsfrv4 gudois6g)ki6ough 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 gg 8fj /;zz3l:mkveur6ce,p) 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 a rectangular bloct)rmkcq ;98ek4ea mp,e0h df2k of glasqr k2kdm4ma )ct890 ehe,; efps at an 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 transmitt4jdcjrpd p4) l2i2 b+wed from air into a piece of glass. Which one )j22 dbl + ir4wdpp4jcof the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatw r;(5gsimq 4tic 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 of the lettered rays shows the(gisq rwm;5t4 path of the light after it exits the glass?