11.24: Two wave pulses travel to the ria 0v y5l;qjie+ght toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pu5+li vjea0qy;lses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plast.1h/ijrm xh vms48hv1ic block. Which pair of stas j.h/h14mh v1vr8m xitements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thr+ 4m;z .zzqyxe htigs: p*d16hough the point labeled B in the diagram shs6q xgp*z4m;: 1htye z d+izh.own. 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 reflection occurs whenever ligbwin 8j o3u39sht is incident on

  05.18: A student hold a hand mirror to observe the od +3c*6 j1f+wbmxmopo3kn g4back of her head while standing in front of and looking into a wall mirror. If sh w fjm+b4go6c*1n x3kmdpo3o+e 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 behind the wall mirror?

  14.25: It is observed that a light ray changes direct8h+o gbjm,w 4cion when it enters a new material. Which one of the follow oghb,4+8mcw jing choices is the term best associated with this phenomenon?

  96.19: Light that has wa ,4i )yri 7evjyqjyg8(velength of 500 nm in air has wavelength 400 nm in a transparent material. r,yig (7yq ) yvj8ej4iWhat is the index of refraction of the material?

  98.04: As sound travels from steel into air, both . (m3u7( nx5rzkpv ;(*g ii 2cxvuculs2lh1 wbits speed and its:

  00.01: As a wave moves from one medium to avfe,(ff+u 3 *u hqmxk8 second medium with a different index of refraction which of the following wave properties wouqkx(f,f fu8*u+mvh e3ld NEVER change?

  05.47: A sound wave genewl 3jkwz v6/ 5mg.3vwyrated from a 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 statem.3 yvw vzm5jlw g/3kw6ent is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof spe 2uwbi(p uz2g.aker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sou iw.22pg u(ubznd 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 strike9- e.gpvyzs4ds a rectangular glass block with an angle of incidepvdz-g sy. e94nce 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 towar vk9/hchrsb*v 4j wu76d a point P on a boundary as shown to the right. vb/7*9uwhj cvk r 6s4hWhich segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering atj.k 9wi 3i1rynq,rf-ir from water? Air is at the top in all diagr9ftki,w r1n3-qyr . ijams.

  94.11: The critical angle o/ jl* 1 r bj6vq,-tzs2nr/lksof a material is the angle of incidence for which the angle of refro/b s1klnr6jsr v/tj*z-l ,2qaction is:

  95.12: The principle underlyib-x; tdbna s7*ng fiber optics is:

  98.36: The critical angle in a transparent substap whd9 6c4we+ince 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 index of refraction of n =u;hu bb/yzw, 2 1.5 to material Y with an index of refraction of n = 2.0 ;u z2,wh/ybbu. If the speed of 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 vs4i iqcx-lu5s) db ):glass by observing the critical angle ocil dbv5q4 i)):-us xsf 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 lig a* jrmm/s31p e(jq1xnh.+ewfht makes an angle of inciden3qp+x1aefser nhj1*j( w m/.m ce 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 (*aw()b8cq ip mm- n lajey/e1n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and targm*ai (8eqb n -y(p me/jwl1)caet. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium mzf*0csl y2d -3 as shown in the accompanying fig*2-szdm lc0 fyure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light pagawy +bb-n+od -q h0/bsses from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three iob-bqnayb h -/d0w+g+ndexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passq92qgt 6fgd)9)lzoj-v;k4 vv+xs r j ping 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 desj+6 fg) 9kg-qox t)vlszjq2prv;d9v4cribes the relation between the indices of refraction?

  09.34: The diagram bfw 2, *gi2jhb2q39 chlv jcrq/elow shows the path taken by a monochromatic light ray travelqh23vlw*,fcj 2h2 c/ qibrj9ging 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 liglfh:eu k7/ h4o3get2frxvr3 9ht traveling 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 j:h r *cd4h 0okw,n+ jip4rpr6o.jp;2kw (gmp rectangular block of glas,jj2pj *:p ki0mw ;c4o wnh.4k +6o(drghrprps at 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 600nm is transmittenz jh70n7bn 7fd from air into a piece of glass. Which one of the labeled arrows besfnhn 77bjn07z t indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular gltf:yzm)luwoq 68 ,x y /sq gqkw5+(ls0ass 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 after it exits the gl 5/fo 0swylxzt6s u8ylm)(,q q+k :wqgass?