11.24: Two wave pulses travel to the right toward a rigid boundary o :;qa-gyyz .v )he, )jut,lecas shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictu-je vah)q zyeot,y:ul.,gc ;)res 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 t.9gpxza6/8e vx s+df bhe surface of a plastic block. Which pair of statements correctly des 9+dpxs exga8 z6/v.fbcribes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through)cpg u u1e:(le the point labeled B in the diagram shown. The ray reaches a flat u:)geeuc l1(p 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 lizq:cdtn6z7 d,m.5 k ceght is incident on

  05.18: A student hold a hand mirror to observe the bl2 4mozu h+y y6(peg/xack 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 her head how fahz6p(uy4x /yeolgm 2+ r behind the wall mirror?

  14.25: It is observed that a light ray cha1ua k(jmli) mptv5gcrrrp042: 0w 1s qnges direction when it enters a new material. Which one of the following choices is tharrpg:t0mq2 c 0 ) 5s1mljpwiu(rk14 ve term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm inv.-p b muxtfzdgwo; 2lq5f w9m/+ ym6- air has wavelength 400 nm in a transparent material. /m2f w+ v-xp y f-9lq dzm.;6tb5umowg What is the index of refraction of the material?

  98.04: As sound travels fr vq;k6k /l9qnmrnpl77om steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a(hhy6(es:w7 xjk7h hr l ).aau second medium with a different index of refraction which of the followi6 hx )h( l:7 rwjeh.u7hsakya(ng wave properties would NEVER change?

  05.47: A sound wave generatoo13-kivksi2t o bz3o9 w;h+red from a tuning fork of single frequency travels from air (with speed of sound 33zrh1o+3obov kwt ;k-2i s9i o40 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 swimming pool emits a sopa8o)chw:p: *xj1 by nund wave thaj8w 1)pp:ohx* bncya: t travels toward 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 m2lk/aer lszn6;2 k(pa rectangular glass block with an angle of incidenc n/kmlk ral2;ezs6( p2e 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 towawh ek k++ch,(krd a point P on a boundary as shown to the right. Which segment best reprkce wk+ hhk+,(esents the refracted ray?

  98.17: Which diagram best represents what happens to a ray ofb6gn/:nez l c7um f;r6 light entering air from wategfu;z6me7 :bn6/rnc lr? Air is at the top in all diagrams.

  94.11: The critical ant b5i/7kq ins:gle of a material is the angle of incidence for which the angle of refn bi7k tqi5:s/raction is:

  95.12: The principle underlying fiber optics is:h34 o bln3-wok

  98.36: The critical ankp+*du)rt ypuz1o(yhwt,0tyg* 8ca 8gle 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 from material X with an index of refraction of n = 1.5 tnxy6x 9:le9 ono material Y with an index of refraction of n = 2o6n lye9x:n9x.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 diamo 6;xx,a)hhfpvnd and a piece of glass by observing the critical angp h x6;)af,hvxle 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 air into a clear material 1ft1ck7l9bik. When the light makes an angle of incid17 t kl1kcif9bence 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 material of index of refract xj pez: (2ah4c95pr l4:.lcld ra;kfgion n. The 4agczrchr2 pl:4a(: fje pd5;xlk. l9laser 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 is:

  95.31: A beam of light passes from medium 1 to medium 2 to mediuh)rnsbw*3 0f cm 3 as shown in the acco30 csfh rnbw)*mpanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medirj* s2(:a:itojgh ) obum 2 to medium 3 as shown in the diagram. What may be concluded about:(tgjoba*s) orj i2h : the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanysxn9 r. li)qxt2lv9af4d6t jn..4 c veing diagram shows 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 tt i4x6nl)j. nlx9 e.q csr9dv2v4 .afbetween the indices of refraction?

  09.34: The diagram below shows the yhn2s/z:yyg w ( 2ao1kpath taken by a monochromatic light ray traveling throzy / w: sankh21oyy(2gugh 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 traveli ;7r )iy *ld1fz-swpxnng 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 reyb(xo m14u*8d pbvj5bctangular block of glass(5jb 1pxv *b o4m8duyb at 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 frcs :k 7x(db+7 w0t+ajrqgvc r *3z)xrrom air into a piece of glass. Whiq0jb 7 w +gcka+vzrc s(*):xt d7r3xrrch one of the labeled 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 x7gm4o9 j;**jrhwjt2gl hhub 29bcj0shown. T9b72*ljh0bm t4gwj; h *jcr9u hxo jg2he 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 the glass?