11.24: Two wave pulses travel to tyk 9un/0ib,rshe 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 pul,krsi 9y0/ unbses coincide?

  08.30: A light beam passes throughzqaxm0w0fxlp/ 00o l+2e50o2y y vc xh the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase cx+f0opm05 cv02yhwx zlyxa00 q 2elo/hanges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight dow69p k 2i5qdiphgb )ov+yr5 bj0nward through the point labeled B in the diahbqirv02) id 6 +9g5ybpjpok5gram shown. 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 occurs whenever light is incident;yx j9 b-;r/ bwfb/hzb on

  05.18: A student hold a hand mirror to observe the back of her head whilespn+3 js,a(q:ff( hni 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, ssfiq ((jfn3hna+p: will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters aou78 : 3jru nlgh6jf5t new material. Which one of the followijh3uorgj n6 u:l7tf85ng choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has waveln hgu;w5 yr*vt6(sy, fength 400 nm in a transparent material. What is the hfyuyn; r,(g*6tv sw5 index of refraction of the material?

  98.04: As sound trave :*f 76kgv).gkbo dswnls from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to)0qgj t20sgvy a second medium with a different index of refraction which of the following wave proper )0gg0vjtyqs 2ties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travu+3qrbkuz m(rx /p*f5 els 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 soundq rm/ 3 uu5b+x*(kprzf as it passes from air to rock?

  14.28: A waterproof speaker placed at the,q rf.nifrxv75r w )-d bottom of a swimming pool emits a sound wave that travels toward the surface of the water. rwrfx5idfv 7,r.-nq )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 gl px.w14dk /xppngub6*m4gg,bna4 p4i(xd7 gm ass block with an angle of incidence*744pguawb(gx.p, mxkgm4x 4 dp nn/6dbipg1 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 point P on a boundary as show l2..x p(vuknmn to the l(2u xnk.m pv.right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents rbirhr c+*( :jwhat happens to a ray of light entering air from water? A+ j:c(ihr* brrir is at the top in all diagrams.

  94.11: The critical angle o( :i +mbtwip-uf a material is the angle of incidence for which the angle of refraip:wu t b-m(+iction is:

  95.12: The principle underlying fiber o l (s0dg(:m8ykx n:qxvptics is:

  98.36: The critical angle in a transparent substance surrounded by air is gi71 nl2ffzzcd.os3b/1x 0 cx $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from m y;8dfitvq2.apque10k psa; )aterial X with an index of refraction of n = 1.5 to material Y with an index of refraction;s)0.d8aqt 2pp yvk qi;u afe1 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 glass bygzha)k u. neme1*-dp9 observing the critgekz 1p-n)ae9 u.m d*hical 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 air int8k0z vn0r l 0a;8igj,x0:cnrjq c l0nho a clear material. When the light makes an angle of in,lgh:8 0 8a 0niln0 kvz0c;qrcx j0rjncidence 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 emb*p7a0 nq,aw n+zvh; heedded in a material of index of refraction n. The laser 0*vp nq ; 7+h,neazawhbeam 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 passesx*k.i-z5vqlm t3(sjkjh oue3. + ljw* from medium 1 to medium 2 to medium 3 as shown in the accompanying *.-*tuslmlk+e j3 5jkhxi 3wo .v(zj qfigure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 sy*t3 .c: 6evrb dapf+g6j 5 kcar.vk0to medium 2 to medium 3 as shown in the diagram. What may be concluded a.a6t 5a f.: ckjcsvvk e6b+pdgr 3r0*ybout the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that5xuw vja35eb . 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 th a5vuexbj.3 w5e relation between the indices of refraction?

  09.34: The diagram below shows tha4hnnr02z7mzoli iz6 y8r:v: e path taken by a monochromatic light ray traveling through three i n :vmi62z8ya 07nrz4o:rhzlmedia.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 tnb 9 yhnsp(49 5m q juh-d18vaxw::qcwraveling 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 of glaf7 oq;t 6/8zffsbvi2lss at an angle 8so2 f zt7lif;qfb6/ vof $45^{\circ}$. 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 oxcctntftwr0eiq:3j)i ( .p+vj ( dh-0f glass. Which one of the labeled arrows best in htqf(0t03 wc)ei:ij.-j(p xvc+dntr dicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangul3i9h4z aaabvo pr9 (3iar glass as shown. The glass has an index of refraction of 2.00 and it is surrouni49 (za393hi bvo aaprded by air. Which one of the lettered rays shows the path of the light after it exits the glass?