11.24: Two wave pulses travel to the right toward a rigid bouow,nf cg69,ru ndary 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 9gn,6r,fcu ow centers of the individual pulses coincide?

  08.30: A light beam passes througg7nf /j5 8d4 myjr k,nzbhk,1jh the air and strikes the surface of a plastic block. Which pair of statements correc4dk71 zk8 jh,jjymg/,r f 5bnntly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labewe sn74o- tg .d+de:2ccf-wqwled B in the diagram shown. The-d-.wqse+ ofdgn4e:wt 2c 7cw 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+t g 9t5t-sloj occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whib:4/c :fpg .snvn0fbrle 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 how far behind the wall mirrorn nrb .:vc:/pfs b04fg?

  14.25: It is observed that a light ray 4w+-cgshbd:8 jjc rj4changes direction when it enters a new material. Which one of the following choices is tcjrgjdw+b4j 8-s4:ch he term best associated with this phenomenon?

  96.19: Light that has wavelengtz*n4f 0yu p :e;jd g3nvx--bkmh of 500 nm in air has wavelength 400 nm in a transparent material. pn-n4ye b;3xfvjd* um-0 :kz g What is the index of refraction of the material?

  98.04: As sound travels f4 9fyw4e ju)sgrom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to 8*-i.qfur n) w3h:cpc1nggjq a second medium with a different index of rg cu- g3j q h1i8nnwqc).rp*:fefraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated fro7w cg/a,y0bfxquc 7t 8m 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 sound as it passegcbw8 7q7u0t/a, fcyxs from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimmiki+e,u: /z p o-0gulkf/-l xe ng, g.pza6ar5tng pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave hpt5g ue+-,0.l-grnox6ie lk/fuz:,/ p zag akas 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 wi3xr6 /ozb ca0nth an angabr/o nc30xz6 le of incidence 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,2m+voay g)e), wstar toward a point P on a boundary as shown to the right. Which segment best repre e+)v2 o swm,)gaa,trysents the refracted ray?

  98.17: Which diagram best represents6j qa1-vi -)tqnius-o what happens to a ray of light entering air frq-u 1-i)ij qna osv-6tom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incgt54t k,b *1:v0csa9eyei )(vxz vh-opbs 3f cidence for which the angle of * h9gtak:cx0t s(y) v35- 1op v bfczv4beise,refraction is:

  95.12: The principle underlying fipzl slk07wu i3zhl6y12 n8 gw6ber optics is:

  98.36: The critical angle in a transparent substance surrounded by air 84.l n-kbq8y, q j2bj lmnj)oiis $30^{\circ}$. 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 of refraction of nj by dn *q5-pu -k+0, *8pec1va npsbiee)wzq: = 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 light i-+cebv )8ywpp*dbjzu -q,5:n* knai qsp01een material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glamap5 (j4istf +5el5+ )gq 0btn vcb;ssss by observing the critical angle of the light in each material. Glass with an index of refr)l vjg+i bp 5asb 5sm0nfe qc;st(t4+5action 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. When the lighc )n,o 6aelt7vt makes an angle of incidence c7 )lv o,tane6equal 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 p*fie 9gv+bekl5)k 2zin a material of index of refraction n. The laser beam emerges from the material and hits a target. See the k2pikl veeb9f* g+5)z accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medi:6-,jw0 rdu(y)nxp um hpz 0jhum 3 as shown in the accompanying figure. What is true about the respe :,zh0 0xrmp)-yuph 6(nujdjw ctive indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mediuqd)o2 m agc.;rm 3 as shown in the diagram. What may be concluded about tdmorga).c ;2qhe three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying do uuf:p z9-g6bmp98 yziagram shows the path that a light ray takes passing through threu pmz:zy f99p-bg6uo8e 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 path6-7.i1pnm i,zzjc : u lkah6ka taken by a monochromatic light ray traveling through three media.The symbols il.zk, nak ujm6h7:z1ic -p6a $v_1$,$\lambda_1$ , 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 travel )qowbdz 731e;dl gzy8ing 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 a rectangular block;v-) 8gumikam of glass at ui8ka;)v gm-m 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 fro wa1+ 0 l8gcj +obnrvxe5*1s:u6jtb ism air into a piece of glass. Which one of the labeled arrows best indicates the path of the lig0jgabw5xlveo1srs+*:j+ni6 1 cb 8tu ht ray after it enters the glass?

  14.44: A ray of monochromatic light ente9fu- bqujj*wz2+ xun3*sg 3w wrs 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 path of j*+9ws *fjqwu2ub-gn z x3wu3the light after it exits the glass?