11.24: Two wave pulses travel to the right n *k vxy 4,so0(2mnfww,4x kfa toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the ka2(,0my n4wfn owfvs*x, kx4following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through thvxhf:ca: 82v he air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase chav8h:a vfh:2cx nges for the reflected wave and the transmitted wave?

  12.02: A ray of light pass*mhwg xp7b 0q;:)g vxpes straight downward through the point labeled B in the diagram shown. The raybv g:h;q*)xgmpx0pw7 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 occur9q /de km:;m kyy9*ye7cvkb+fs whenever light is incident on

  05.18: A student hold a hand mirh zko1.;r (4kswvqetm8b /x -hror to observe the back of her head while standing in front of and looking into a wall mirror. If she is s/ vw. 8e rt(;smx4 hz-kkhobq1tanding 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 observedu r7 5jm1zwjgpl16mof6 ,3wkf that a light ray changes direction when it enters a new material. Which one of the f6w m fw3rojp,g1u l5fzk7jm6 1ollowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in y4i b;q5k+r98 p vpqz4wljmo: 4df)cia transparent materilj8i+5p i ; y:bowv4 )qkcpdm4rq9zf4al. What is the index of refraction of the material?

  98.04: As sound travels from steel into ajtejg+*7i jj s6o ya69ir, both its speed and its:

  00.01: As a wave moves from one medium to a fryd/u3v. 1ib8kw-kp,4i)sf dr.pqbsecond medium with a different index of refraction which of the following .iy fus/ )v,4d 3.8pr -qkkfrb1ibdpwwave properties would NEVER change?

  05.47: A sound wave generated from a tuning f: :h87rddt2e8xy ztc iork 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 passes fro2 r 8ditzhey:t 7cdx8:m air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits *rs:azptuv5 4( sb aq;a sound wave that travels toward the surfacea5svp s( *b4tuqr: za; 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 rect,c )z.ll1 djaig ;/bhiangular glass block with an ancg,;li dbh/z.1l)ij a gle 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 P on a dyf;/glsrzcj/vb/ lr*7 e* 3h boundary as shown to the right. Whicf b glh*7/;y/zcrdlvr/js *3 eh segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray ofn * zt;mywru+mf +0hc; light entering air fro f tmm*+h;rznywu;0c+m water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence gow/nkcu;-n)dmq.le7+x f+c for which the angle of refraction+ld/.)+-;xo fekcw nnq 7m cgu is:

  95.12: The principle underlyingfoc4 amj ql3(.nvb2wbs c)0k( fiber optics is:

  98.36: The critical angle in a transparent substance surroun;kloe ;o)5 oeh(j qul+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 travels from material X with an index of refraction of n = 1.5 tolvot.:9 e ) ae,ksu*ql material Y with an index of refraction l kl,u)o : evqs9.at*eof 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 be++lc50ji exl ;m4xtq ltween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critic+m5jc+i04leltl q xx ;al 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. Whe mwp x9l .7g*5l1hmaiqn the light makes an angle .xmgmai71pq* l95l hw of incidence 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 p pztm) 83gt,ort8y1hof index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the pthpp)z t yt18 mg8ro,3osition parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to mo;ygs(6, s www:7qk e0c*t4c/ ukoat yedium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)s:e4twyo/g cawut60w,ks *y( c7 qk; o?

  00.14: A beam of light passes from medium 1 to mei223hk: 2i,vtd)jppz u rv;xh dium 2 to medium 3 as shown in the diagram. What may be concluded aboutuhi2p3 ),pvxz:2 ;2 hrjikdtv the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the pat)jxfdjdw5-+of: hps0 ch6u8h h 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 td 8)hxh du+jhfo5c -wp6s jf:0he relation between the indices of refraction?

  09.34: The diagram bdz -pj2mn* gl;gk0w7y elow shows the path taken by a monochromatic light ray traveli *k;n pzlmw2g07- dgjyng 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 ew*l jiw j+6vx* o0w6 7spk5hmin 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 do:3 b/8mwicqof a rectangular block of glass at an angle odmb/w: ic8q3 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 i1 wua4.isuv7 lnto a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enteruua1. w4 ilvs7s the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass . wfqu89-w+obu4pzoc psrd.1hij+ ,was shown. The glass has an index of refraction of 2.00 and it is surrounded by ajui c-ouwp.z+,qwhdbp.4f 1r+ws 8o9ir. Which one of the lettered rays shows the path of the light after it exits the glass?