11.24: Two wave pulses travel to the right toward0bguxdcyb93t t* 3 *gh 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 pulses when the centers ofbghcxd0uy9g * bt3t *3 the individual pulses coincide?

  08.30: A light beam passesy b( *ptf5rhy 9 womt9q0v3:js through the air and strikes the surface of a plastic block. Which pair of staqmo9tfph js* (9:tb y3v0y5wrtements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward th9u5jgshubn o.1g)h jzix +k8-rough the point labeled B in the diagram shown. The ray reaches k 9.uuiz)g5hx8-jn+js o g1hb 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 inciden oq ers.2,c;blue+mg l/3i2ovt on

  05.18: A student hold a hand mirror to observe the back of her head4ic -:40jp(v;ftojdvb jrr r; q5 u0txakt-v: 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 williv (crr4: :-- ;rxjv fvt;d j0 q50jau4tkbtop see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a new ma v,grcnijg x).yu13i- -rb6epterial. Which one of the following choices is the term best assocgu-r,ebyv6jcn3 )gxi.r - 1piiated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air ha .8ya /zpzk-d4+ njq6 .ilge awu2nqo1s wavelength 400 nm in a transparent materiujla/-p o.6gdz+ 2wak1nn8 z iyeq4.q al. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and w p l20d9xba:gits:

  00.01: As a wave moves from one medium to a se()vmo1af)gio cond medium with a different index of refraction which of the foll1)gva fim(oo) owing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequen8q le8nbj-1njcy 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 frequencl8qj8njeb n-1 y of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the boga0dxoxz79 sg71 gur;ttom of a swimming pool emits a sound wave that travels toward the surface of the waterxszag gx79du10r7 ; og. 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 block with q*9l ifs chi2* cpsqnxs u -qbo02jd.w* g+i56an angle -j0opq big9* 6cd2+isscu*hi q*s.nfw2 5qlx 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 point Plx uwce89( kv0oy2rlx+8k ,lc on a boundary as shown to the right.0o8c+wcl2r 89ekly uvl ,xkx( Which segment best represents the refracted ray?

  98.17: Which diagram best represents whx1 xtd5:,iht llp-0j c tq2x5zat happens to a ray of light entering air from water? Air is at the top in allxx2pjc l-h0q tt l5it1d 5,xz: diagrams.

  94.11: The critical angle of a material is the angle of in41d6j qh exj -2rjm 5yesa3.3nexw (hfcidence for which the angl33j2jxh a y6n1erjsmwqf e4 5h.-(dexe of refraction is:

  95.12: The principle underlying fem, -2bob e4owbbf:1b2:k gjc iber optics is:

  98.36: The critical angle in a t7/)x yunweor /6z 7fgkransparent substance 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 of1fuuh sd y2,,/f hl8nzp*5rje 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 sp r8u/ zfjly2fe,,u1dsh h5np*eed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass byni iq h7x135zk observing the critical angle oiz7 qi3n5xkh1f 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 lightt wif8sw84 m8e. ic4lr makes an angle of incidence eqmri 8 88lfs i4w4tcw.eual 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 materi/lugaohtpi8 24oc( b3 . epfp8al 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 bt.f 2h/8ipeal 3opogc(8pu4 target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to mesos1 z f*c fwo,pay d;/17tewwgu( ;7idium 3 as shown in the accompanying 1/* gwz;7 py1csw udwfsof;t( 7ai,eofigure. 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 v8y4 vi :e)1u5wazjq0f c- oxr5zuyd:as shown in the diagram. What may be concluded about the three indexes of refraction, n1jy vq501 :-5:4zfoxr)v ydcaw8uueiz, n2 and n3?

  97.24: The accompanying diagram shob0pt0e jk bh87 /h1kalws the path that a light ray takes passing through three transparent materials. The indices of refraction bhkp a78t elk10hj0b/ in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monovf5v xe(5an7t zuim+ pma;,8zchromatic light ray traveling fav;i tzm8 pm+vxua5e( 7z5n, 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 travelin0dso(7:cid+ srm mmwa6y snv 54v:gu4 g 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 nmz( af xuc) 89f5p,e fweo:6pis incident on the surface of a rectangular block of glass at an 8oaenwm:69 f)ze 5 xpp ff(uc,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 t(nu v s* 7dieeblgh2/*k9 8im a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters hm*v n8g*uk(teled/i 2ib9 7sthe glass?

  14.44: A ray of monochromatic ligk5 w bii1r9sk1k; r3iaht enters the right-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 ribkr 1ik9w15is3 k; apath of the light after it exits the glass?