11.24: Two wave pulses travel to the right toward a rigid boun: ai +/w0onqoadary 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 pulses coincide+/0:nwia o oqa?

  08.30: A light beam pas cy905bigjvmm *7l ,yix0 p4(tc8qxr hses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transx9mjqpyvr i45(li7mgc c h0,8t*b0x ymitted wave?

  12.02: A ray of light passes straight downward through the poidqbx9w th. l;-nt labeled B in the diagram shown. The ray reaches a flat mirror phw . b-qlx;dt9laced 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 d2er4 +(ia1m0yaes a kincident on

  05.18: A student hold a hand mirrofd )hme0vtdn;o;;q4ar 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 hq d; vdmfe;oa; 0)h4ntolds 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 ra1 qa2v.mrq .0ls+v pwby changes direction when it enters a new material. Which one of the f.. rpvqblsv01mw a2+q ollowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air 7tq7nfz 9v u:0ya*z;cn)gtwthas wavelength 400 nm in a transparent material. What is the indev;7c9q tn)y0gnt *uazwz7f:tx of refraction of the material?

  98.04: As sound travels from steel into air, bb;+gt5 gqqh )q). d;oruztta4oth its speed and its:

  00.01: As a wave moves from o:kqm;q c+1 vdone medium to a second medium with a different index of refraction which of the following wave properties would N1c+ mk: qdvo;qEVER change?

  05.47: A sound wave generated from a td-,imkl9 o,haa;ii)l uning 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 pad-mi)a,,l la ok9ih;isses from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool ey*tr.4fv ag9f mits a sound wave that travels toward the afgy4.r9tf v*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 ac xagqkf-ki283 40c bblock with an angle of incidence oaqgk-i8cxkf c3 42 0baf $0^0$. 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 showngidz ,5u; *n2qa bz:lu to the right.zgqud* zb;,u2l i:5an Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a r4 uhbul hj sp(af 5bks4--t-(gay of light entering air from water? Air is at the tos4a j5b4uhph(ugt fl-s(- b- kp in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which thv d ds: w6:b)az/kd;fqe angle ofk)b/::sz 6q;add vw df refraction is:

  95.12: The principle underlying fiber opcymlf8duqa un h)11/9tics is:

  98.36: The critical angle in a transparent substance surrounded by ww g 2tugcm-da9o-0k4air 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 indej htvhnn48 e;v)0-n-*p avgd yx 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 the speed of light in material X?ya h- pd8nv0vvj )nhg-t4 *n;e

  03.15: A jeweler can distin .vhe8ve/ w-mnguish between a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refracemwv-venh /.8tion 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 atc 4(/+zpyd9*ke /rer dt- fxfrom air into a clear material. When the light makes an angle of in a/+ed9rptx4dte-c/kyz(f *r cidence 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 embeddedl-l .e rgq fxfw+3lr.3fh,yw2 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 of the laser and target. The value of n e l fgx2,y +w-rrfl.3l h3.fwqis:

  95.31: A beam of light passes from m(d)wy1 1xv2 7fhthpq zedium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respec1vx72(d hhz1pfw)t yq tive indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as y f7rrnqg-pnaf *e-x2(2gj k )shown in the diagram. What may be concluded about the three indexes of refx-je2)pfr*( fn27gag- nrq ykraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that 28sjtex pee0xb1uobx11 u) v +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+exte12vps8 1uxu0e 1o)bxjb . Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic lpr-lwtw (;c(.gn8rn x+m s m-gight ray traveling through three media.The;rc8(prx--.gl+mn nwg s(tw m 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 iem ice*s p0dkt v6,gd20mp:9wn 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 -pei7qgsb v, ,a rectangular block of glass at an angle ofps ,-be,7qvi g $45^{\circ}$. 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 transmitjl7on v0n/ 5d*kktlo0 ted from air into a piece of glass. Whd5 /vo n*ollj00kn7 ktich 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 glass as shown. gbfv0i 7jwk3jx:+ /wj /e ;alhThe 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 after it ax;ij j 3j:k g0bf /vw+7/lhweexits the glass?