11.24: Two wave pulses travel to the right toward a rigid boundary as sha6cl g8rqf4r zms07o3own. After reflection of the triangular pulse, the pulses will interfere. Which one of the followingmo30zrcs a6 48rg q7lf pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes thedh)3tjmcu31* x x0 *nc2j obfo surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wb3mh3ox*xjt oc) fnjcd 1 u*02ave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in tno w2yxqzmje z)19ykwv6biw -l.* ;x)he diagram shown. The raymnzikv)o -e69bx).xj w2wz ;w1 ly y*q 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 occurs whenever light is incyfgvh eqx(ih0- 6 :;.il+wv9j ua did-ident on

  05.18: A student hold a hand mirror to observe the back of he.bnbxa/u8b k9+yi4w er 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 see the back of her head 4wb9nybxk8au +e/i.bhow far behind the wall mirror?

  14.25: It is observed that a light ray changes dir7wef9 2w1+ x8vpejo.kxw x 9pzvn(e k7/mr3ljection when it enters a new material. Which one of the following choices is the term best associowexkpzf(vp3j /l2nv9 erxm7 wxe 7 8+k9w.1jated with this phenomenon?

  96.19: Light that has wavelength of 3 hj93y yhr.wfbpt)t 3ns+g3z500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of tf33 gwpyh+tjs zn).33 tby9hrhe material?

  98.04: As sound travels from step1qxm/z eeok1m 6 v2n(el into air, both its speed and its:

  00.01: As a wave moves fz8s(b3 -a fwqerom one medium to a second medium with a different index of refraction which of the following wave propb3afwz- es(q8erties would NEVER change?

  05.47: A sound wave generatk xruc.c/4z d9ed from 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 a/ dkzccu9 x.4rbout the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof spe/e,pmvny+ao jl x: *8naker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In*o/v, na x8j ep+nyl:m 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 ofelgynue ;90yc)o/0 u1sh rg:- mt 3xdf white light strikes a rectangular glass block with an angle of incidence of y eu ro0td:e-9mlny/f1 )0x gshcg3;u $0^0$. 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 .2fhizm5wbb,w d43i eP on a boundary as shown to the right. Which segment best representsbi ,mbef2 .h dw43i5wz the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entej,z (0b8jrqo bring air from water? Air is at the top ,bjq8r0b (jz oin all diagrams.

  94.11: The critical angle of a matjrhx9a4q n5c6erial is the angle of incidence for which the angle of 94xh56arncqj refraction is:

  95.12: The principle underlying fibce ad8w2in 9y.e46gdier optics is:

  98.36: The critical angle in a transparent substance surrounded vbuo zpq;c)gt, 3dxz/c: l8 t*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 indexty*vr:4v 0ddt79 zsax of refraction of 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 speed of ligh9tv: *txr4 dzd s7vay0t in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by obgrd( -dkg 0vx.1cdcfe6 7lz+ibwnx),i4p8xjserving the criticagbkli) j0 +v6c8.pxi(rf ec7-zgwd ,xxd41 ndl 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 mf a/gdyb(s 3lzb+.,p60qal ie/rx a3air into a clear material. When the light makes an angle of incidence edib a(/bf+ a0s3p,zyr3 xqg.lem /al 6qual 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 embeddxg jm nlzo 3q21ql vo+u))7:f0wjj 7kxed in 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 and target. The value of n k2gw f 30:ljlxq u7nqv)o xmo7jz)+1jis:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as :zv no)g)m5 agb c;4vbshown in the accompanying figure. What is true abouv ):oagznmg;b4 v5)bct the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 7.s m3kt30fpuvf m i)hto medium 3 as shown in the diagram. What may be concluded about the three indexes of h3kt)3 .imfs 70mfuvp refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path t ndd*7p7on6g shat a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectivels7dg p *6non7dy. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken b:m-bz9xm ,, 1ywhacejx-t /kwy a monochromatic light ray traveling throb,9jz:ckm -xx,w 1 a/whm- yteugh 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 gla m3d.km9*j uplss ($n_g$=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 rectangular blzcch2f zsa6m :83g0ka oi* gn.ock of glass at an an * gcahi.a: ng8 szo0z36kmc2fgle 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 transmitt2tde prrfl m+.mi bdol4/q(b47kb(3t ed from air into a piece of glass. Which one of the labekdbodel(.r (3bm f24mt tlb+p/7ri 4q led arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light 1r9 ;uma2a:gktj ,b k.iv2*tfqedf d3g (,etw 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 patajtw ,2fq,e(fgbk3 dtrad*vm2:u i1; kgt.e9 h of the light after it exits the glass?