11.24: Two wave pulses travel to the righ1h6*p/r 9(llf xyv ki2ch3ehd t 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 coinciph1hef6v *x i l2/r3 hy(9cdklde?

  08.30: A light beam passes through the air and strik on 6bu,aw a 6hl zjgzp(e,mk0/+;gkx0es the surface of a plastic block. Which pair of statements correctly describes the phase cgn0m z(aaz,ehl;bw6gu6,/ojx+0k p k hanges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thril4bxe+ doo; (ough the point labeled B in the diagram showl x(o+d i4b;oen. The ray 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 occud pzsi k6h8t8*aho;)8la)birrs whenever light is incident on

  05.18: A student hold cau834jkcf((nj 3mxo a hand mirror to observe 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 see the back of((j a 34jn3uckfcmo8x her head how far behind the wall mirror?

  14.25: It is observed that a light,esssep ovopop b08 a83;0 ;kx ray changes direction when it enters a new material. Which one of the following ;pe3,;o0bo se 0 k8opspsxv8a choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavele0 cx1uqwssrkim5zuw( zi12 6.ngth 400 nm in a transparent materiaz q11iuwsm0u xzw(c2 .s ir5k6l. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and xny 17k :1vba zeyqvwkv4-x68its:

  00.01: As a wave moves from one mediuo+t )s/r6.vsgjc gy*dwr8sv 6m to a second medium with a different index of refraction which of the following wave properties would NEVER g/jyswr g ss6*+tovcv)86 . rdchange?

  05.47: A sound wave generated from a tuning fork of siz + w;0xx.nllbhemz o,lqcyi(a, 7qjki j-,7)ngle frequency travels from air (w lx-0kjh+liqzmw;c )jbnao(x ,q.l,z7, 7iyeith 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 jv 38k/lkgtl -placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the souj/ kgtvl-38k lnd 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 rect4tqy 6w 7zrtd*angular glass block with an angle of incidence o6qt 74dtwyr z*f $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lighk)re5 8oo r)out is directed toward a point P on a boundary as shown to the right. Which segment best representeo u)k85roo) rs the refracted ray?

  98.17: Which diagram best represents what happens to a ray of lightmnwfe1)*nz/s- s2m wo8 p1ndr azzz2) entering air from water? Air is at the top in all d*18z1- op) zzdezssm)a/rfnn2 mw2wn iagrams.

  94.11: The critical angle of a maid z68fh;yt:qwma0 y3o p v50aterial is the angle of incidence for which the ang 6yhaz f805: ovym3d0awiqt p;le of refraction is:

  95.12: The principle underlying fiber opticshoex ;mu:ige/g wh,7gbl0.rup9a 1b( is:

  98.36: The critical angle in a transparenk 9 6h w3j r707wzkpnjlpekl08t 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 with an index )d8l gv)j;4)ilxvjzue us; g3of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. jgv;)l d) 43;)eugu x jli8vszIf the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguinmg 5 +v5(t.;qjmedqm sh between a diamond and a piece of glass by observing the critical angle of t(;g5mjq+nvm.qe 5 dt mhe 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 air into a clear material. Wb9unvt o(/ -wrhen the light makes an angle ofou( nwvr/b9t- 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 yl9 3(tjy sxm0is embedded in a material of index of refraction n. The laser beam emerges from the material and hits xj(3s y9ylt0ma target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of ligh(j9 t+aethq ebm5nkr00:2ui kt passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of0q +:i ektb 5nkm9the2ja (ur0 refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mep floub*ms. 7:jw 5xnf+0b(lsdium 3 as shown in the diagram. What may be concluded about the threef u*lbopb7 jw5 n:+.m l(s0sfx indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram sef wacv-5c * 5m6da:qhhows the path 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 the relation between the indices of refra *:5vqa5cd c-wa6hm fection?

  09.34: The diagram below sho pin.cyfsby rrw; 2nv( 8x5 l-lxdcv5r6z) *u.ws the path taken by a monochromatic light ray traveling through three media.The syx)ciwyv c vpld(-r5 b ur. zsn8x.5fn6lr*;2ymbols $v_1$,$\lambda_1$ , 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 travel5k qay+r , t(diz*7l:wcymd2d/ iezf+ ing 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 is incident on the surface of adcnw .;l7 rsxm -l f5,ujf5f4nxzm71x rectangular block of glass a- 1wujxfn77xmsx554n r, mzc ffdll;.t 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 transmitted from air into a piece*l.wx5nckw l)z s4+ii of glass. Which one of the labeled arrows best indicaskz*+cxnlii.5w4 )lw tes the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light ewdcm*63s jt(9k taia(ol l0ids 6vn ( h/-yvg2nters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded bac ko v0 s 2-ngwvtli6 (*l(9/jhtdd (6asyim3y air. Which one of the lettered rays shows the path of the light after it exits the glass?