11.24: Two wave pulses travel t 0qj6,pr(lct12ub8q8z8 pakxp vl ix ,o the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will q( lib8t018c zv6x8,qpxa,up2 jkpl rinterfere. 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 passes through the air and st5769hf3kjz . im warsbrikes the surface of a plastic block. Which pair of statements correctlyzrfb7s9wh36j ia5. km describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the poin/ e2w pc:- )eukwvzv+t8: zvxdt labeled B in the diagram shown. The ray reaches a flat mirror tzx v -)k/dvwezu e:+2pwc8:vplaced 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 incid7 vnflqd(tu4,j wzszs.r)2c0m4s oy8. etzv (ent on

  05.18: A student hold a hand mirror to firm m + 92wgmxtr66,dobserve 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 gmid962w mm6t xr+,rfbehind the wall mirror?

  14.25: It is observed that a light ray changes directdbovo) d -:c0.5chcy cion when it enters a new material. Which one of the following choices is the term best associated) cyodcbdo -cv05:ch. with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in alq01f:owxne2(j/5 uv4 cokia transparent material. What is the index of refract52 /xonlik0we ufc14q :vo a(jion of the material?

  98.04: As sound travels from steel into air, both its8 5hp 3 sg*m-1jnxjmss speed and its:

  00.01: As a wave moves from one acder*)- cxwf 2vj. z6cw2*hrmedium to a second medium with a different index of refraction which of the fovcah xr *2-dfjcz)*2cwew r. 6llowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency ttq lxs7( vka.-ravels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is tru a ks7x(.qlvt-e about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker place(om9ok1mvo3 /v ;opjr2dh ii, o,. pend 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 frequ1(okoim3omr./ ;pdviv nj9, ooep 2, hency $f_{water}$, 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 r.mnxs ;ux k7*fvt zg-c0kd,6yectangular glass block with an angle of incidemxd,cy;k* -gv7 tfu.zx60skn nce of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lighty/.msqz ;h mi)(olnuuh;z.0t is directed toward a point P on a boundary as shown to the right. Which segment best represents the refracth/0m..nztuozh y q ( i;sul);med ray?

  98.17: Which diagram best represents what happens to a ra5a/e*v;-by xygag zu.ws6r 4wy of light entering air from water? Air is at the ab6yzvrea* 4-xu ;.gy /wgs5w top in all diagrams.

  94.11: The critical angle of a material is the angle o 7h3yr 3x2t. t5uipvkwf incidence for which the angle of refraction is:75k2r3tiy 3 wt.hxup v

  95.12: The principle underlying fiber optics pkw,(/y3 d+2 pnjuzibis:

  98.36: The critical angle in a transparent substance /-*rf9lry7xys3 yqh+u m n,d ksurrounded 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 refraa j 1:ct:d6helction 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 materde ha16: tc:ljial X?

  03.15: A jeweler can distinguish b/evsaek6t2a:c l piw 11 ze3-oetween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass witl1ca3esti : wezeovka6- p1/2h 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. W 7q*wszvbzbh x:4onud m)+j 55hen the light makes an angle of incid5: nbwmzvzd) h45x qo+b*s7ujence 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 materqrm y4q/0(d+ekgdgfs 1q8 zlk( fi77aial 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. Thm/( 1+ qrqk7 ekz ldaq 4sigyg78ff0(de value of n is:

  95.31: A beam of light passes from medium 1 to media. jovkq6lr :2um 2 to medium 3 as shown in the accompanying figure. What is true about the respective indic2klqo.r:ja6 ves of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium onid w4ww 8:x5cjwp6 dp5lz)62 to medium 3 as shown in the diagraoij:w 4wdd8 wnlw6cp6) 5 5xzpm. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that 4du.,mgb d/qda light ray takes passing through three transparent materials. The indices of refraction in materiadduqg./ db m4,ls 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 n0(o8la q2blgj)l*zl taken by a monochromatic light ray traveling through lb qajl2*g(0n llz)o 8three 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 glas 41 t/tn-7db mwnyelg psv1)cirn7g+ 5s ($n_g$=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 in 7.i z h7p7+ehmog7fwgcident on the surface of a rectangular block of glass at an ang7f wmgih 77+oegzph7. le 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 c( - kpm1tndu1of glass. Which one of the labeled arrows best indicates pku1 m(ndt1-c the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangularsw09r tut0p knmy9ro : nl2c(7 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 path of the light a y9c kn:ro7tm2ws00l (9 rntupfter it exits the glass?