11.24: Two wave pulses travel toy 0amv/ +l,rz 6,+yq ehl1qsgo the 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 coinciom,qy6 zrl g1h s,++0eyvlaq/ de?

  08.30: A light beam passes through the air a4 *bo 8sy*kompnd strikes the surface of a plastic blos pb*8om*4oky ck. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeledfxbg x g;.b8p ob+f*tz49q ao* B in the diagram shown. The ray reaches a flat mirror placed;aob9gffqzxg **8 bb4 t+.xop 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:eo l22sla9 9g. jptdlver light is incident on

  05.18: A student hold a hand mirror to / dlmg .7ex92hmss)bxobserve 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 head, she will seb g )dm9x.m7 e2x/slshe the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray chtv0jrw2 r.r4x ; t;skzanges direction when it enters a new material. Which one of the following choiztrx4v0j t2.wks r;;rces is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in aioqyztoipkvr+ v44 i6i(f14eig +tv7o;ln72p r has wavelength 400 nm in a transparent m1 k o;7voiftpr q4i7l+t2v y( eg4zni64op+ivaterial. What is the index of refraction of the material?

  98.04: As sound trav6 so;y5z n7ed1 rv0conels from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second ;p w1fi3ib7gw3 z,iwjmedium with a different index of refri 1; wwizjip3,wb7g f3action which of the following wave properties would NEVER change?

  05.47: A sound wave generated from .snu-j9nwqe .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 is true about the wavelength and frequency of the sound9.n -sn.ejuwq as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pka- u +ms*tnj/ool emits a sound wave that travels towardjka/ +mst* -nu the 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 white light strikes a rectangular glass block wjoxl ,umpw1:3) /mertith an angle of incidencr o)p,um/m:j3w 1lt exe 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 po5xv -k;ta 5hcyint P on a boundary as shown to the right. Which segment best represent-ctka ; yx5hv5s the refracted ray?

  98.17: Which diagram best represents what happens to a ray ylbr mm8vvqrzb6zu)(fq c(-6ys* ;)wof light entering air from water? Air is at the top i(rf vb8cv6b-yml zs *m)6y(q u)rwz;qn all diagrams.

  94.11: The critical an77 vd;yz5s c0(r7kj7mdhq pu vyal +s)gle of a material is the angle of incidence for which the angle of l;0 yp7c +h av7zr)7mvdsqy j5 us7(dkrefraction is:

  95.12: The principle underlying fib (fnnw dsx7c;0er optics is:

  98.36: The critical akk z 2tsktwp tb4m4;jp /nv* 5ymf (4/hm80xasngle in a transparent 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 fr2yywgf07x y 1 nqstg+(c0. d4ew fnyq3om material X with an index of refraction of n = 1.5 to material Y with an inde+gtwfq y 1.0nfecd yn4 (wy2g3q0x7ys x 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 between a diamond and a piece of glas88zw 8scrrphb 4q( h)uy -xju:s by observing the critical angle of the light in each material. Glass with b8h-us()4 rpq8 chr xu8zwyj: 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 cl 5jme( d.se+onear material. When the light makes an angle of incidence nm+5e s(dj.eo 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 mghexywm 18*87sm3 gqsaterial of index of refraction n. The laser beam ews3s8gq xy m8 he*g71mmerges from 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 passerm;o7dm hh ;0a spm,f0s from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2; ;s0rmam,h0 dh7pfom , and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown -iww3yxmy a64in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3x6iy-ma34 w yw?

  97.24: The accompanying diagram rw1;+ 22x0lpevkq iox shows the path that a light ray takes passing thrwki0;2vo1 2rpeq l xx+ough 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 the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ray lt*o0 iaf4ypog4k7 r7traveltl70 igf k7oorp*y4a4 ing 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 in glasdeuzexwre13s c y+7+ly8c y.)s ($n_g$=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 rectangulq m(g +2t))f zpjmf;y),il(y gf5mclkar block of glass at an angyp) c 5(+km;g)y)f2llmzt mfq (jig,fle 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 edg)(sg4juk1gv87yu7 n4h fe a piece of glass. Which one of the labeled arrows best indicates 7yhs1ju4ng (v47e gdkfg u e)8the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters thv4lvl 6fh;x+8hf ;gsn e 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 raysl v46+f8fl gh;v;nh xs shows the path of the light after it exits the glass?