11.24: Two wave pulses travel to the right toward a rigid ba t t/pii;)yunwzc /47oundary 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 /tz7icn)wt /ia; yp u4of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surfacpy04 jf;us m;.bb5ajp )yzak:e of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transm musz; ;jpf5apy0): k4a. ybbjitted wave?

  12.02: A ray of light p-s8ev+ t xfv 71sn9jcpasses straight downward through the point labeled B in the diagram shown. The ray reaches a fla+jc1vfse 9p8tvxs -n7 t 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 b v0i5nx uaa1)guo;,f light is incident on

  05.18: A student hold a has6 t xg9vxxh2+o8+dh qnd 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 front of the wall mirror and she holds the hand mirror 1 ft behind her hxxxhh8g o vt9+6+qd s2ead, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a liw12 u/1twpd 5n33q j;sjzoc x06j rwftght ray changes direction when it enters a new material. Which one of the foz1 1u o52qwtfcr/0swn xjw;3 jjp6d3t llowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in7dhc c:(wz6ug air has wavelength 400 nm in a tran6uhwdc7:z (gcsparent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speede + 3recfrc7 b18b4wal0wr+ *cgql bc9 and its:

  00.01: As a wave moves from one medium to a second medis n6mut,l*rp1zg io5z f :y9u4um with a different index of refraction which of the following wave properties would N,1gi sftnr4p 6yzul9z *muo:5EVER change?

  05.47: A sound wave generated from a tuningu./r31y uky0f)g4tlw zne4 a6bk xu/h 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 frequenc 4tn.z146 ux 0w/)kuykfea /lyb3rguhy of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poolg* angy:y 2nfvm;;on: emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a f:ynanf2:gg ;*v mo;nyrequency $f_{water}$, 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 zxk j2s8 yxdd86lw*n3kes a rectangular glass block with an andl2x 63jsxdy 8w*k8 zngle 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 is directed toward a p vjuhfr 3p9f*/oint P on a boundary as shown to the right. Which segment best represents the refracted rayf pv9/* jfru3h?

  98.17: Which diagram best represen cfk).qa r*+kw( mhd,lts what happens to a ray of light entering air from water? Air is at the top in all diagwh(q r m .)d,fkal*kc+rams.

  94.11: The critical angle of a material is t9x 6cb*zv qw5whe angle of incidence for which the angle of refra bvwz6cx9q* 5wction is:

  95.12: The principle underlying fiber opti 11e84d 3hlapxi5bssb cs is:

  98.36: The critical angle in a transparent substan+/wa mauq4,kbce 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 m)bx/q rbnb,uim; e3.taterial X with an index of refraction of n = 1.5 to material Y with an index o ,/x;enbt3)b r.iqubm f refraction of 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 distinguish between a diamond and a pietubew)d(f -d8ce of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a - dtfb)euw(d8 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. Wh)js2nes 4c2enmfzb 09 en the light makes an angle of incidence equal4mns 0fe2z92 c)esnb j 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 maljsnoq6wxy- yh8l 9 00terial of index of refraction n. The laser beam emerges fromw0 x-yojlq0n yl869sh the material 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 p3) a-.pqd dfsg4 7;ed7l5tasazc 2kptasses from medium 1 to medium 2 to medium 3 as shown in the accompanying fikg l-7.5)sz da3tsadt47p dep af ;q2cgure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 t.- 6faq9nh qf0d pn+n4 nxnj;uo medium 2 to medium 3 as shown in.f-ujq;d9nnn + hnaq fxn640p the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing td*+jzu0tx, n7)hp/zq hes(mk hrough 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 h )p jxdnze/+hu, ktms*zq07(the indices of refraction?

  09.34: The diagram below shows t sbwtlxfdv -f,id w8 --x32v4bhe path taken by a monochromatic light ray traveling through three media.The s3vdbvwx- ibw-dl-tx f,8sf 42 ymbols $v_1$,$\lambda_1$ , 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 vk*oq,1ug i e7traveling 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 incc(yyavo 0mm/79c 5b yx2z a-yqident on the surface of a rectangular block of glass o m-xmyvybc azac 0y2 79(qy5/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 transmitted from air into a piece of glass,f ohzs9jq*w( . Which one of the labeled arrows best indicates the path of the9*w,ojshz( fq light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the 6w ,bxtks)g wb bv(+f9right-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 the path of the light after it exits the glasst6)bvb (kg9ws b, +wfx?