11.24: Two wave pulses travel t8lfqi6 z97p rio the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following picturei p6z8fi97lqr s best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through *r6cxsbhx2h u7je(-yo-1c r v the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflecteshehx6vc 1( c--7 2b jyru*roxd wave and the transmitted wave?

  12.02: A ray of light passes straight dne55g4iw0eioe 5ul4dy o; y(eownward through the point labeled B in the diagram shown. The rae(540e55 dwe4yil; ygnooiue y 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 whenever light is is)t rxm sio ee49c /;+fyk25ggncident on

  05.18: A student hold am(ww+01etpi.g9moev + q )mqi hand mirror 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 frontt+0qmww .e)m m 19giqi(ovp e+ 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 changes direction when itg(v2 u(f:a6 f b3frgc(uzue 4l enters a new material. Which one of the folfz fg a2(cu3(4:b ugl6vef(urlowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelg*zb3hp)48 cr b phir6 p.krk ycwi*-7ength 400 nm in a transparent m8gk3rrr-cp hk.p)7i** z yw4 h6bic bpaterial. What is the index of refraction of the material?

  98.04: As sound travels d 0 9prv jqo )/uac2nk1ye098wzfflk.from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a dif 6mw0e6y0n4t xsh/xghferent index of refraction which ot4xgw my/60 h nhse06xf the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequiimk 4 ,/ zxm5+ 0mk,0+iy.lbickv nqkc 9yx3iency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true ab5k0 ib,m+ivim kix+xzy 4cy q,/ik.lkm3cn90 out the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed a(mfb2 lh6(1rf1 gis bjt the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. rs(j1bf2hm bl61g (fiIn 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 stk*y4:h7qe, j2:k rmy vzrat-drikes a rectangular glass block with an angle of incjey4z7m,a* 2rkvqr:d: -ky t hidence 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 on a boundary as shown (/:jai l x x8iduqx20f jvoi d;o:x,9bto the right.xv,:fxxx 2diq alo8j0/i; i(j:d9 obu Which segment best represents the refracted ray?

  98.17: Which diagram best ydz xj8q60zb 3vs38j,z fhb 4irepresents what happens to a ray of light entering air from water? Air is at the top in allvzf bd,4088qy x36h3 zsjibz j diagrams.

  94.11: The critical angle of a material is the angle of incidence for wh/6usxcyvare2(j. s m 6ich the u/ae2y (jx.csvm66 rsangle of refraction is:

  95.12: The principle unoyteu 079*zyd derlying fiber optics is:

  98.36: The critical angle in a transparent suvvm( eiy5cy* + ykf7d-bstance 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 an7f)+yxe bzm8 qar 5 .iwt0fcr2 index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed 7f+ rc0 . yetbi)8q5wf a2xrzmof 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 of glass by obs3b2o o2h cau )wcmnt4*6b+e tterving t 2wc 4h3)+6tbt*noomuetcb2a he critical angle of the light in each material. Glass with 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 light makej5ugbe8fr/ ;nyw( ns;s an angle of in; nuys( wn;gr85/ef bjcidence 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 of refraction n ;vf)slt iombo:13r u/(h qgz-. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser an1r gzil/ o )o;tvq u(hsmfb3:-d target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medoek *k*;kzm awov020xm6gef 4 ium 3 as shown in the ak a *mk4xw6oeg;mek*z0fo0v 2 ccompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown ino8+ a790 xrrclb tq)dt the diagram. What may be concluded about the three i+br0)rq xtl7 t9od a8cndexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path thty:e do;8u)b19ei 6gex p wxk+at 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 descude gb61w9oix eytp;8) e +:kxribes the relation between the indices of refraction?

  09.34: The diagram below shows the patk h qmqv;*m f+uepj:+-h taken by a monochromatic light ray traveling through three media.The symboem+pqk* -vh j :m+;uqfls $v_1$,$\lambda_1$ , 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 tpr0-4ox tsiozsghfa lf(vt5 4*w8h6m w84/gvraveling 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 on the surface of a ,1 4,5uo tnlh3dmyjj krectangular block of glass at an anuj h4l,m5n kto,ydj31 gle 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 waveleng/7h:5t;.z g c)s w lngfg lg:.aesw-txth 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the pathxw7z/5 ):twlcfg t s .g:gse.n-g;ahl of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as sh /nu(evnk/i;dz( c5aga*6 i- ckrcs0nown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lette-/0i rs nncv(5/u; c(izeag6 d ka*kncred rays shows the path of the light after it exits the glass?