11.24: Two wave pulses travel to the right toward a rigid boundary as sh/ 8 jor;*uaxlhown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the p*ux alj8h;o r/ulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface o qlj:jf7n1o 3hf a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave aoj1n:fljh3 q7 nd the transmitted wave?

  12.02: A ray of light passes straigilm)s:2 qdf4p)r ib(kt 6 hji4ht downward through the point labeled B in the diagram showb6jihf ) ki: ipds24()ql 4trmn. The ray 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 reflectitua5)/;riz a e03mwlyp6 u2reon occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of1 * (fw5snrcp 9dzcfu3 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 hdw3sc zff9cp5n (1ru* ead how far behind the wall mirror?

  14.25: It is observed that a light ray changes dirc -i i(h9qgzu6o*0sd dection when it enters a new material. Which one of the following choices is the term best associated with this p6d h09isiuco(-dg qz*henomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm iu + pt9smc:ydryh ua,e*rhu3ld9k) .*n a transparent material. Wary*ehy cmld,d3k:t r* .up+hu9s9 ) uhat is the index of refraction of the material?

  98.04: As sound travels from st;xum8 mhoq-9o,ybllt j,svc-1 6 :wgteel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different ian,w;kf7mv 6fl/hg /k 88gyqyndex of refraction which of the following wave properties 6fqh; 8kwkn,8 /7v/fg mlygaywould NEVER change?

  05.47: A sound wave generated frwf6 y9.l;t5xt ,fp9qh tf)ytb om a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound h9t)x59yb q. y ttp6ftw,ff l;1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottomd0jw 6lxoo-q)dek 8 8z of a swimming pool emits a sound wave that tr -8 elo0dzwk6odq )8xjavels toward the 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 stri)5s;(f. zisxpxm e5tbkes a rectangular glass block with an ange5p mfzs;x.sx) ib(5 tle of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light k) s.voe(ko 8ris directed toward a point P on a boundary as shown to the )k oer8 .s(vok right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to 7xat51c dqm);lh1rqwdu o( 7ka ray of light entering air from water? Air is attad)mq1o5 uq77 rk1w(cd; xlh the top in all diagrams.

  94.11: The critical angl whr6ne 2pu1nvdy+ xsxy7 5y;0e of a material is the angle of incidence for which the angle of refraction vys;uyr h+wx0xyp2n17 56den is:

  95.12: The principle underlying fiberi3 0c24siv icy optics is:

  98.36: The critical angle in a transparent substance surroun mau7r. hggx/+ded 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 travels6h5v0kcfv t/k,- i-oqcaf wl0 from material X with an index of refraction of n = 1.5 to material Y with an index of refraction ofq6o f-k -khtw0a/, cv0v5cifl 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-uj6t( 5 nvilneo (6cvocp/2p distinguish between a diamond and a piece of glass by observpn6en(-c5i6 uvjotl2o p( vc/ ing the 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 makes alw t 7:6d-nhfi 4xly3an angle of incidehi 4t :fayd3w7-ll6xn 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 ej.s j/ms2 -buislb-+ is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. Sbmbejs.js i/s + -2-ulee the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passeo -ve/f olx22fs from medium 1 to medium 2 to medium 3 as shown in the accol-f vx oofe/22mpanying 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 memr o mfmi(vqtq:h0 9xf).6kh7dium 3 as shown in the diag0)oxffkqrm.h 7:6q9im(tv h mram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyiemqf r*br(uj1+ 8w3 ohng diagram shows the path that 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 describes the relation between the indices of refractio1q bruw +r8h3o*fm(j en?

  09.34: The diagram below shows thejw1cmngx,8 d ( path taken by a monochromatic light ray traveling8wcxg, dn 1m(j through 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 glasfrfl//nu9- 3- +obn0g wey lbls ($n_g$=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 incidentz qg*y:uzo1l3wj m: r) on the surface of a rectangular block of glass at anz wr)ljq zoy:13ugm* : 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 isanz; fz,q/ 1ih transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the glass?h,z;inqz 1a /f

  14.44: A ray of monochromatic light enters the right9hh 0qzl8 sy q(-h6o*oxv;csr-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 theov9l0yqhco( h8zsh- q*6rx;s path of the light after it exits the glass?