11.24: Two wave pulses travel to the right toward a ri - -1lt.m+uvkfavje/mgid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of-kmjv+afum.-e /tlv1 the following 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 the surface o :f2v8fog;-lxnsgd;*irdrnv + v,sp6 f a plastic block. Which pair of statements correctly describes the phase changes for the reflected wavl xifv8-vp:f*, g;dvr + s nor26d;ngse and the transmitted wave?

  12.02: A ray of light passes straight downward through the point label,n(v.o rughra1;2tfnx9u:s z ed B in the diagram shown. The ray reaches a flat mirror pl,og2z1:nxru;r u9nf vs ha( t.aced 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 incim) v-d(r1blal c u1li*dent on

  05.18: A student hold a hand mirror to oka 8fbbtmi;1 .bserve the back of her head while standing in front of and looking if;tb1b.a 8 ikmnto 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 mirror?

  14.25: It is observed th.c i*x tehg2 h f5utfkki13+f e6keqr5-6(atcat a light ray changes direction when it enters a new material. Which one of the follo.catrk tff(6 ux 6k+qh e*i h5ei5fgc-32k1et wing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength ofgpz5 *sf0 lzi/ 500 nm in air has wavelength 400 nm in a transparent material. Wh0lsfg /*izpz 5at is the index of refraction of the material?

  98.04: As sound travels from steel intzmj w/3 ( +yledwn6wr4 at(b)vo air, both its speed and its:

  00.01: As a wave moves from one medium to a second mediu77wp15 kxy jzhm with a different index of refraction which of the following wave properti5 j71pyzx7 hkwes would NEVER change?

  05.47: A sound wave grzy .ok,h05tz enerated 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 about the wavelength and frequency of the s koz0htryz ,5.ound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of acu q6.v v(4xl i7gf)zpc i5ai* swimming pool emits a sound wave that travels toward the surface of the c4fvpqvz6)ix*gua i i.7( c 5lwater. 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 strirykoh xs8y1d(kp)7rbm* c/m5 kes a rectangular glass block with an angle of incideb75mo8*r/dm y) kk( pyxchrs 1nce 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 * xzgel+ s+f8/ca2voypoint P on a boundary as shown to the right. Which segment best represents the refravz+c+/xg*eas 2o l8 yfcted ray?

  98.17: Which diagram best represents what happens to a ray of l6(1vfvi ib.wiz.f9rwaym 0,f ight entering air fr 6r.(af 0fm1vfi9ib.ziww v, yom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle ofg x, r7ke:e46 qj+iamm incidence for which the angle of r,ajme+g q64xe 7ik:mrefraction is:

  95.12: The principle underlyingro)71xx1jkg s fiber optics is:

  98.36: The critical angle in a transpare uskw vnx9.hw0k8:1rxzp4s x* nt 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 m/vm7gjl u+j2;szt )wry pgq:*aterial X with an index of refraction of n = 1.5 to material Y with an index of rzmw+;jgu r7:p lygt*/)v2jq s efraction 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 adq1 b-s*zj4spiece of glass by observing the critical angle of the light a1s4jbq z d*-sin 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 materpyx75tr3+r pb qliu5b*byd:q vv q5,9ial. When the light makes an angleqyi3bubqvr55q vt5x*d ly9pp ,+:7 rb of 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 is embedded in a material of index of refraction 2 nco wnh)a2d9n. The laser beam emerges from the material and hits a target. See the accompanc2n2n)9 hawo dying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes fro c:8* q::jo0q v p5qc)lwipgbym medium 1 to medium 2 to medium 3 as shown in the accompanying filpc: qpy5qvgoc:b8jq w0i: * )gure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown i) ,vff+,fzasq n the diagram. What + qf,fzf) sv,a may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lightxmt.a( flp fh57hg5 ;k 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 refract.l;xhh t( m5pgfk f57aion?

  09.34: The diagram below shows the path taken by a monochromatic l+ ahxkubn/;r:ight ray traveling through three media.The sy;xu+n:r/ka b hmbols $v_1$,$\lambda_1$ , 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 travel2oalc i. ezs-(ohs9s9z 0lw l/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 tb2lxr ouh3v,j7a 0 anfxhy*8. he surface of a rectangular block of glass at an o20 l8. jaxur7y,*afxvnhh3b 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 , t4pv8yzsyzv .9a-v 5vwtkrxe,kh4 .from air into a piece of glass. Which one of the labeled arrows best indicates the path of the ligh9 e5s w8vkvvyx. 4z kvapry.zhtt ,,-4t ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-,ra v qv).e.xbtriangular 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 the light after it exits . verqa,bv).x the glass?