11.24: Two wave pulses travel to imwk 7;. bnq -kwiv/+n+ rsi;hthe 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 irw7n /iqk.wb+-s i; v;h+knm the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a pltl5n3 hk c/m.wastic block. Whichnh5tmk./wcl 3 pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes stra+ 8gdfw.z )a 6hctgwfgpo8b *6ight downward through the point labeled B in the diagram shown. The ray reachewb. ghpw c8+ *t)fz6 od68gfags 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 li;bro hiu9)p1 .9 hvgajght is incident on

  05.18: A student hold a hand mirror to observe the back of her head wy -urfly ; z .v0:h0qxin,.pkjhile standing in front of and looking into a wall mir0; yxvpz q:h.kr f-.y,u ljin0ror. 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 that a l4w+7z 8ra21 dqkpmddfll: jsg),sy v2ight ray changes direction when it enters a new material. Whiqzv 87d4kld psf,gs1+dyjr)w2l: a2m ch one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm i9 i tjgdmo:dsrv9ajwq5dv 1-*qd6 bmm)91xu/n air has wavelength 400 nm in a transparent matexr5-b imov9uds9d6tqv*m 1 j:d m aqjgw/1d)9rial. What is the index of refraction of the material?

  98.04: As sound travels f1d 5) q g*4q-lbmgtxnyrom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different indexm q4eb uzlq1 s b16h-lqyx7j22 of refraction whic l 7xq6j2b- sqqlu zy4bm12h1eh of the following wave properties would NEVER change?

  05.47: A sound wave generate:pgh+5b l-b ryu)0 yb8 mgz5yxi2 ak+td from a tuning fork of single frequency travels from air 8rb+t5bi2 z:yg- xpua kyh0ml y) +5bg(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 passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimpdcza*-(2,g ti4ps3 mz6v f t9auk)mrming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a f)3uzm 4m(, k 9a*tp6t scif zrp-dv2garequency $f_{water}$, 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 bursta0 n6;eq jz;xo 2iyi j1c3t6ar of white light strikes a rectangular glass block with an angle of i3yxz1aqij e26ona6 0r;;j citncidence 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 shown to th)ht054 ddy 3r+ nwt*sg7dkm24 ac.nas(q ojnq e right. Which s0o 2nstyks)rn an.d *5d wtmg+q7(dqj3 4ha 4cegment best represents the refracted ray?

  98.17: Which diagram best represen0m0 x08kkcoal ts what happens to a ray of light entering air from water? Air is at the top in allm0clk8 o axk00 diagrams.

  94.11: The critical angle of aw*qx xr :r.ihpu4d a2,+p.eqn material is the angle of incidence for which the angle of refracx 2q ia4.w.+edp:*r ,nqupxr htion is:

  95.12: The principle underlying fibebnh27o ypyeus v,f*e4njp :(5r optics is:

  98.36: The critical angle in a transparent substance surrounded b3ikfufcb8e9 ym o0/ +my 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 t7;p xgm 6hg.tj)ibp2 jo material Y with an index of refraction of n = 2.0. If the speed of light px6 )72 jbtmg;.jhg piin 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 o yyv-4cl8tj ncg3zp * 5hjk),xf glass by observing the critical angle of the5thvcj) lyn 3j -g p4*8kcyz,x 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. When the l+j8hfxux.a83g2nmba7rj p3 e ight makes an angle h2j83e8 .jpa3m+7gu xarnxb fof 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 e-/;fyytp ts .nmbedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the acco;tp/s yn-.fty mpanying 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 medium 3 as shown i:a 1t m5(e-r4m8;y0f 6 kcpucqbc ikgrn the accompanying figure. What is true about the respective indices of refractionm5gbck4fc: rc; y(qk em1 6ai0-rp 8tu (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to m bswxu3c: /intw+f1/nedium 2 to medium 3 as shown in the dnsbicx+ nf//wtu 3w1 :iagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram sus rcdm-3s,k*kdi v94hows 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 ucs*md4rik v -9d3,sk best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path tydzf7) +vdhv s-zv ::kaken by a monochromatic light ray traveling through vh)syv7dzvf :-+kzd : 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 traveling in glass (.x9fdamfqshx) t;o l 2n4tnyg9)1,fx$n_g$=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 ::x: qzbn*h, qwl *qwyrl1(diof a rectangular block of glass :w* ,bniw :zdxq:(y1q h*lqlr 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 from air into z.wa( -*i n; z(ypxpm(nb0zfp a piece of glass. Which ;py-(b(izx .nfppw(za *nz0m one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochrotu-bnb+6 s u6imatic light enters 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 tbutn6 -bs i+6uhe lettered rays shows the path of the light after it exits the glass?