11.24: Two wave pulses travel to the right toward a rigid boundary as sholm1fpcn +xww d. 6r,+dwn. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pict c,6+ p+ 1dr.dwlxmfwnures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passesh+mj( oyia;7s,r m9fdgc d 1z. through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflectj y,m+;o1f9 zhddgr7(msa.ic ed wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in *4jci8u* 1uwxhy x+sv4* uu wl(8gld*v2cmwp the diagram shown. The ray reach(yw sxu*482g8 4*i uvh1cwvu*w+x mupd*cljles 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 occg 5+k69 )kd(,mmjhwpf x(r ofvbg 6 a+iz5yzg:urs whenever light is incident on

  05.18: A student hold a hand mirroroz:ga4zo d/gr 1a 7.hg 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 fron ad /7r az:oho1.gz4ggt 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 lg v/-un(1ptof ight ray changes direction when it enters a new material. Which one of the following choices is the gf(nou- /tp1 vterm best associated with this phenomenon?

  96.19: Light that has kfref .t+ww9o8cps67wavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the material?e9 6pfcw f8 o+.t7rswk

  98.04: As sound travels from ssb13oo +vj)i kteel into air, both its speed and its:

  00.01: As a wave moves from one medium to g ru8t04c) nsua second medium with a different index of refraction which of the followig 8r)0uncts4u ng wave properties would NEVER change?

  05.47: A sound wave generated from 5pmlbo 1b /b0ma tuning fork of single 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 tbpb 1om5/l0mb o rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool 1zbv6l azm*o+0t d k9jemits a sound wave that travels toward 9kat+ v*omj6zd 0zl1bthe surface of the water. In the water, the sound 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 block witj- u.9x gn4bfmh an angle of incidence of gf9.xm4- jb un $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed towardxn5dlosf -yxx1,t(: q a point P on a boundary as shown to the right. Which segment best represents the refracted n (x,o ysq-tflx15d:xray?

  98.17: Which diagram best represents what.oqoy b7pai1e 3 o7zr6 happens to a ray of light entering air from water? Air is at the top ei6oyz17ooa7r3 .qb p in all diagrams.

  94.11: The critical angle of a material iscjk k): s05.)jcvqsfu the angle of incidence for which the angu q:jk.c)scs )v0kfj5le of refraction is:

  95.12: The principle underlying fibe2o9jqao4k+wvpw m80l za44 s zr optics is:

  98.36: The critical angle in a transparent substanc klr-dm 2/ qoc y/dny7c cf(e*qr.y71ne 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 in*y8k:j 4;dw4ql 9tnyevs u kb,dex of refraction 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 th ej;ly4n:48 vkwuq9kydb ts*,e speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by h 0/pnwv((w7ge sq 6drobserving the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle607g d(( rwqh/wvsnpe 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 light makes sb,ilfuc 80jrmvgky, s0021h an angle of incidenc1mjgru, lc0vfi0h sby8 ,2 sk0e 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 la)7ucvt/w)fz 02lpwit(3; p4 xlgxq orser is embedded in a material of index of refraction n. The laser beam emerges from the mate wif3v(c;)rtu0p/ l zqp4owl72xtx)g rial and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to mediu5 c 2xvqsew7e+m 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n32vce x+sw5q7e )?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 a6uity5ca7rvp:d m5 ik3pd70 as shown in the diagram. What may be concluded about the three indexes of 35pi7um7:tv dr 0dy 5akci6ap refraction, n1, n2 and n3?

  97.24: The accompanying diagram showsq4v b6zcu(d 7-qja hff6-nt 7z the path that a light ray takes passing through three transparen (zbz j7 6af67-qt c-duqnfvh4t 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 of refraction?

  09.34: The diagram below sh 5k /.avs)1hayk jak cu29hpa3p)itc:ows the path taken by a monochromatic light ray traveling through tap: ah) 3pvu1a/5ic 2.s 9kc) hkajktyhree 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 traveg7skp d1l (0ssling in 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 onv0wsf01 p(tk q the surface of a rectangular block of glass at1(q ksfpw0vt 0 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 8 3h3imi go-y0/hd fne600nm is transmitted from air into a piece of glass. Which one of the li-eohgi3 m y/f08hd3nabeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light ena3ymrgbf .f:-ters the right-triangular glass as shown. The glass has an in.g br-mya:f3 fdex 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?