11.24: Two wave pulses travel to t4j3a l ,m 4lmoqpvp0r2uun/qc c /w1dyi+5vy8he right toward a rigid boundary as shown. After reflection of the triangular pulseu ijr,1p4mcd wap8co ul0y/5/+42vv qqynm l3, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the aiql9j iv5 q:il2r and strikes the surface of a plastic block. Which pair of statements corr: q ij5vq9i2llectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downwar w70p+z xc 57iwcj;r* q,szrixd through the point labeled B in the diagram shown. The ray reaches a flat mp+0w ji5, wx*ci7r qrcx;zz7 sirror 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 whene(q3 f-7gzx19mwfvg7zbh ;q1m v jtsf*ver light is incident on

  05.18: A student hold ik9qv:a 12 jama hand mirror to observe the back of her head while standing in front of and looking into a wall mirror. If she is staam9j i12v:qak nding 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 direction ws m -pahvy- gi7pu6x(.hen it enters a new material. Which one of the following choice hsau x(pv6ip7--g ym.s is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air h30ri vrxgfm ::/8z-du;le 0 pofjh 2vsas wavelength 400 nm in a transparent material. What is the index of refrrf;0ml/p-zvv: xfo38rj d02 e i:gu shaction of the material?

  98.04: As sound travels from stet1o fnw3esv 2/el into air, both its speed and its:

  00.01: As a wave moves from one medium to a second xlz ;clf4ngc64:yn*drb3:i e medium with a different index of refraction which of the following wave proper;y:delr4*zn:ifcb 6cgx3n4 lties would NEVER change?

  05.47: A sound wave generated from a tuning fork of singqyb/joz p.-(ble frequency travels from air/pz-q( j o.ybb (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 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swd2fv anfxn, , f/ 0bp3dipk5e */9kntfimming pool emits a sound wave that travels toward takdf nf 9ptb/f v efip,xd5kn/n23*0,he surface 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 cquqr vzjy2 m 0re.2.(white light strikes a rectangular glass block with an angle of incidencmq2. rq zre0 vu.y2cj(e 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 towa /;bmf-d s8jlbl,3x)bw5enz ard a point P on a boundary as shown to the right. Which-ld)mjfn ,8 abbelb5 ;zw /x3s segment best represents the refracted ray?

  98.17: Which diagram best repw h9qc; *cp i0a9b96nb-her4hvpq(pqresents what happens to a ray of light entering air9p bpn9h -;c*9(0aqqhweh rb46 qpivc from water? Air is at the top in all diagrams.

  94.11: The critical angle of gk1sc h. nw8ns13eh24/zk fm q s:af0na material is the angle of incidence for which the angle of refractioqmw.nehazgs kkcf81 :24n fns3/ hs10n is:

  95.12: The principle underlying fiber opadgb.o rl km9a/7e u4mo,*h1 ntics is:

  98.36: The critical angle in a transparent substance sua/ d itvz(i733d c:r jg1cbas1rrounded 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 inde31 sjino+ plrjgei1vvd/;3 y/x of refraction of n = 1.5 to material Y with an index of refractrlgjyeo//31j +pv1;s d3vn iiion 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 disting/ mzmr8 xwf (e)07nu k;n/ptgquish between a diamond and a piece of glass by observing xt;m e (gn mnqf07/ rkz)p8/uwthe critical angle of 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 t34wi yp4i2hhmx, j;k air into a clear material. When the light makes an angle of incideny h ixwhpk43tm2,i; j4ce 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 inyh 45ojjyr ;x0hxb fr06hgf1m:0 jz5g a material 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 6z4fghbmy0xx0j5h:fj yro5g0r1 h; jand target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to ,y/6yavabq 7les5h:;sqif1n medium 3 as shown in the accompanying figure. What is true about the respective indices of refrac :ihn s5yle /s ;qbva,y76fqa1tion (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 .yrbz+1rm.+d z r m8vlnx)*zlto medium 3 as shown in the rd l+*)+ zx1 zvm nblz.8my.rrdiagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows thesftn3cq5*y -m path that a light ray takes passing through three transparent materials. The indices of refraction in materiy3q-s*fn t c5mals 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 b((:qx7d7/cr pl 0hsrm;u ecqiy a monochromatic light ray traveling through three media.The symboc7 ;lsxciep0rmq(:h( / q7udrls $v_1$,$\lambda_1$ , 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 ;y9)i je tit/48xtleg ie7cy+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)c1:8ar lr .ol:su3m5e vwafg is incident on the surface of a rectangular block of glass l c.5us1 3faer)w:lgmoarv :8at 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 transmitt (nsvu by,gm9w2m*-a hed from air into a piece of glass. Which one of the l(hsa -vubn*w9m m,gy2abeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as sho-csz2, d*k qzkwn. 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 td 2zc-zkqks *,he glass?