11.24: Two wave pulses travel to therh*uxni2 +c6k right 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 pulses when the centers of the individual pulses coincidehkc 6ui2+ nxr*?

  08.30: A light beam passes through the air and strikes the surface of a pryeii 5* m8)j/(v rriblastic block. Which pair of statements correctly describes the phase changes *)im/b y eirvr8 (5jirfor the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downwar 96ibv zjs59gjd through the point labeled B in the diagram shown. The ray rej96i9g zjs5vb aches 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 whenev w aabwphl1fjyf ,xyypi fc,195rl+(e.z c;3*er light is incident on

  05.18: A student hold a hand mirror to observe the back of her h;a(e:5.sy n dnv (rtquead while standing in front of and looking into a wall mir dv n. rsun(t:;ea5qy(ror. 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 head how far behind the wall mirror?

  14.25: It is observed that a fgnnj7r3wn 7/xddi 8+jsb8a9light ray changes direction when it enters a new material. Which one of the foll+d7bn/d 98sixn8gj3 j fnw a7rowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of hldg;drb* ,y6500 nm in air has wavelength 400 nm in a transparent material. What is the* g;hdrd6lb,y index of refraction of the material?

  98.04: As sound travels f6sez )r he z.s0v6c5ylrom steel into air, both its speed and its:

  00.01: As a wave moves from one med/7o7eixe xyis .s 6y;nium to a second medium with a different index of refraction which of the following x xse7 .soy6ni;/7iyewave properties would NEVER change?

  05.47: A sound wave generated fdqhin33,2g/kwj((dy gu eq 4xrom 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 statement qg((ng2xyud 4d,j33w/qhkie 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 bottom of a swimm r8ssdwzwu3e: pex5*:ing pool emits a sound wave that travels toward the surface of the water. In the water, the sound wavwsz u expr:5* s:e8dw3e 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 4n7 rl sond e(gs9ls:)an angle of incidence of s:g7)ns9 l oldn4(sre $0^0$. 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 boundary as slea ld/ : *)gkavz.9ui 5ggxo/*ym,lqhown to the right. Which segment bestlo/ke/y d*mlzx u9l.:gq )*,a5gaivg represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering ai q q1y;3w wdh7hk;b37en cc2uqr from water? Air is at the hw;dq;73huwk2q 1b yq7ne3cc top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for 2v*0ad:* l1q1s dest6/1l jonw4xzi h0bq ezewhich the angle of refractdiahde*s04 en*1b6wvlloe z jx20q1 s1:z /tq ion is:

  95.12: The principle underlying fiber optics 1yz6cq: mpwk*j*6u umis:

  98.36: The critical angle in a transparjct(e0kk )f- p6zpm 0fent 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 witjmm43of:)vzm h an index of refraction of n = 1.5 to material Y with an indmo) mmzf: 3j4vex of 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 between8i64 ioyckek( a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refractk64 iki(e8 oycion 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 m8x /u h(mhomb5l7ei ub :wi(5clear material. When the light makes an angle o8eh7mib xm (b(5w hu/u5mol:i f 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 of index of refmm hdhi.+,daz,4+ t foraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters,+ma4,h id.fo+ m tzdh of the laser and target. The value of n is:

  95.31: A beam of lighawc s(:rfzba78slu 4+ t passes from medium 1 to medium 2 to medium 3 as shown in the accompanycwu(b+:zaf7 sa l8r s4ing figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 tccl6w8+2v rn oo medium 2 to medium 3 as shown in the diagram. Whatn rwl+2c6vo8c may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lx nbn43mel psz+:hc0c0vr 2+ c zuap*qpng* *+ight ray takes passing through three transparent materials. The indices of refraction in materials 1z3rna2 bpmgxu +h *np0 q n 4ls+cep:0z+*cv*c, 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 monochromatic ligh 5io12cr1ppngt ray traveling thi1gnorpc p125rough 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 glaqm:7pfxr755e 1xkbrrp2qu(9 hyhs4lss ($n_g$=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 rect jj6bfohw uqlw5ps tqth 8+;/ke:au/z :5m-8langular block of glass ae/m:s+ :jtzb 6 tjh8lkq5/oupua5lwh; fwq- 8t 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 wavele/ol qfohp;+ .cngth 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray afteof op.hcq/ l;+r it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as ccv/qb)r0yw4 wa45zyshown. The glass has an index 0w 5 4yacczbq)/wvr4yof 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 glass?