11.24: Two wave pulses travel to the right toward a el4fd0kz 3i*f9g 0sla)y5ajf rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following picturey)0esad5*lzffa i03f9kljg4 s 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 of a plastlx ys9xolhn44u)c 2-a ic block. Which pair of c9lsy )lo2 x4nux-h4astatements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward t cyjc*)eowi,m0m 9l/ehrough the point labeled B in the diagram shown. The ray reaches a fll*m 9eiew 0moc/ j),cyat 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 lzs4m0d3( a (joljv: uuight is incident on

  05.18: A student hold a hand mirror to observe the back of her heam bwxqed l;3o1pof1 y v*c6t/,d 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 o tlb*ofe6 cxm;3 p ,11/yvwdqof her head how far behind the wall mirror?

  14.25: It is observed that a 85s1aje0vb nb light ray changes direction when it enters a new material. Which one of the following choi8nvj05sbe1b aces is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a 9hpjw:yo.t s+transparent material. What is .pojsw+:yt 9hthe index of refraction of the material?

  98.04: As sound travels frohsk63:2m( f fhn 0;oo luiw,fmm steel into air, both its speed and its:

  00.01: As a wave moves nm u;( hgn xq4pb71z9zfrom one medium to a second medium with a different index of reh z;gqb x 71znu4(mp9nfraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frj0(nm: bw( p2l mbf2pbequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 lmm(wb (j:2 b fp20pnbm/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 7t/tehbrp 5. , iwl:hn8tebb+ sound wave that travels toward the surface of the water. In the wat8 pl. nbete7+wb t:5i h/r,hbter, 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 wxf,*d:j h( t;ibr rh 8r6kap6ghite light strikes a rectangular glass block with an angle of inci( ,hi 6rh:kgrb8x jdrf*a 6;ptdence 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 towar)d jn-y oz*s,x+s8gug d a point P on a boundary as shown to the right. Which segment best represents the refracted ray?o*sg+usd8)-,g zy njx

  98.17: Which diagram best represents what happens to a ray of li+n : h1qgn6v3xb7tr amght entering air from water? Air is at the top in a16t3r g7 nanbmxhv:+ qll diagrams.

  94.11: The critical angt-b;hi :hwj4 ile of a material is the angle of incidence for which the angle ot ; 4hjbiw-hi:f refraction is:

  95.12: The principle underlying fiber o vc4;i py /rh15zka0adptics is:

  98.36: The critical angle in a transparent substance ktz f aemec2.o)n nakf*0)4c1surrounded 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 ij lx4:*peqc yx v yo2f/-qs;mwdrg1.6 ndex 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 ofl1.epd6ywjgqvs2m/4-ro: *q; c yxxf light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by obk u/jnin j. x.o/1ju/gkck l+:serving the critical angle of the light in each material. Glass with an index of refraction of 1.. k/j+n1x u: /kjjc k/onu.gil52 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 materiaa d2tx+44c u 8ftutu6xl. When the light makes an angle of incide64 t2xtxtda 8u fc+uu4nce 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 materv uijkz zbs) 33,o2kmyw4x0xza,f04e ial of index of refraction n. The laser beam emerges from the material and hits a )o 4suk vem ij,4zb,x0k 0wazz 3xf23ytarget. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passrbb 3g319umxj es from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is tbmbr9ujx31g 3rue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medihmn:0 461hgtyuaw5 qjbzh 6 2kum 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1,h1 uwy65z :hm anhk04bjq6t2g n2 and n3?

  97.24: The accompanying diagram shows the path tq7mh6ujggh5e 7x (rsmhu68i.hat a light ray takes passing through three transparent materials. The indices of refraction in materialh8r6.u 5mihqumg77j( g hse6xs 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shoo -zko,v,mgtzrad 6;3ws the path taken by a monochromatic light ray traveling through three media.The s6,gt aozrm d-,v;koz3 ymbols $v_1$,$\lambda_1$ , 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 glasc+bx :n:df4 hvxyek 0.)qa3wf s ($n_g$=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 o):hj9,2:ndakfwp+nj ljj q3e n the surface of a rectangular block of glass at an angle haj:+k 2,njqfw: nl9jd)e p3j 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 a piece ,b*e)ab: qxlupzqa-* of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters*b*up:eaaxl - z,bq)q the glass?

  14.44: A ray of monochromatic light enters the right-trir4vc,h r .,lsuangular glass as shown. The glass has crsu,v4, rl.h 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?