11.24: Two wave pulses travel to the right toward a ku/qp+ - s );pg2ay ls*6twb,x,wxoxrrigid boundary as shown. After reflection of the triangular pulse, the pulses will intex+-oxu,wywa lkb2s * 6g r;,t/q) psxprfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam pju e,th -n)7l+1bshaz asses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase clu 1zs-)+thajnbh7e, hanges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes s(rdua27bj iok-s dm81traight downward through the point labeled B in the diagra72r m8d1oda(-js i kubm 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 occur8j6 wysftkm;/s whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whiler/ r ) 0 w9jm2-1mvugriwtw:cs standing in front of and looking into a wall mirror. If she is standing 4t)m2w 1rg-vsjwu:m 9r0cw/ri 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 light ray changes direction when it enters a new ma .xf6v t8teth+xkhw0xo4y0ye9 kd;;p tek;0t9x xd6 ;e ty8+twhy0kepoxfh .4vrial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm infzr3o5q ycv rw w:7zqwni /)v71m4.we air has wavelength 400 nm in a transparent material. What is the index of refraction of the mav4zie:/ zrww qfv7r. w5c n71yqwmo) 3terial?

  98.04: As sound travels from ste av3 qvv1;ze dd1h,i/qel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different inde(e;s2o72 yra0fiyk aow49qij x of refra;4 0jrwsio(2 yfai7 9q 2ekyoaction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequeld*t ttrn6+6, qvlx2voez6:s ncy 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 wavelengt2t l: *n,66veslt6+xodqrzvth 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 s y1wwzc. yg3m5ound wave that travelyygc m3 z51ww.s 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 a rectangular glassq)n(8.eip x8mxx1e ha block with an angle of incid.xhxap (1n qei8e x8)mence 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 bounda gi-pbz8ubt. cd* rn5i1u24 psry as shown to the right. Which segment best represents ud.unzc21*b rgpbti 5 ps8i4- the refracted ray?

  98.17: Which diagram best represents what happenska v6 5d-xsj )o5cdf;f to a ray of light entering air fro6asf5kx j df-dcv)o ;5m water? Air is at the top in all diagrams.

  94.11: The critical angle o2yiv;0w3;k9mj bwmwn lnm 6ge.t5f e*f a material is the angle of incidence for which the angle of refraction i 5e bw9n6.y3fmm;wmwl; *0einkjvt2g s:

  95.12: The principle underlying fiber optics y; bgbho q9+ 41)vgpkyis:

  98.36: The critical angle in am68ge6e/6natv9 cdl k 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 matmpkz:c*i4 d ,,mt+0 dvl(ebt uw,yv .nerial X with an index of refraction of n = 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 pmb+(*w, :tncd4v0v .i,zdm e yk ,utlof light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glasst xae7mi, gckl6x )d89 by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 hasc ,xxk6 d9m)l8a git7e 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 light makes an anglmx9pl* lspd.*5d4i4ygup skzkm +2 : le o5pl xl 24m .:lp did*+mupg9sz4k s*ykf 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 ref/srjs ls0u;u) raction n. The laser 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 issuj;)0/ l ussr:

  95.31: A beam of light passes from medium ,p d,c. x sh+clng08rz1 to medium 2 to medium 3 as shown in the accompanying figure. What is true abo n,+xlhcg c, dp8.rs0zut 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 arx 6z/clove2q d:, :u(dcf5xcs shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2cf2l xd: xcv/ r,6zec :oq(5du and n3?

  97.24: The accompanying diagram shows the path that a light ray tarp8ei)ee-u /hkes 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-ei/eu)r h8ep the indices of refraction?

  09.34: The diagram below shz25zx l3 7idrog: h4rjows the path taken by a monochromatic light ray traveling through three media.The symbols :h 5x3gijo rl2zrd4z7 $v_1$,$\lambda_1$ , 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 light5imvc)qt f tx p b-mtbxt j49+,e )iedbk,p52; traveling 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 rec, f z6hr,z6viltangular block of glass at an vzrzl66,i h,fangle 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 tr2zvlxt/cg,ak40g -91uc y xuvansmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of /9akczxxu,0vy-t4 g 2 lv1gucthe light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular m8v *)h*-xwookp gc m)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 li )*o-mpoh)8mwv c*gk xght after it exits the glass?