11.24: Two wave pulses travel to the right toward a rigid boundare23 lbuqj(5 uvy as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition l5je3( uvbqu2of 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 *y 48bv wt-+liy rlj2lnt-9 xwplastic block. Which pair of statements correctly describes the phb 8lln2wr4vtwj xl-yt-iy* 9+ase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the poin5els jf)0i3z3hrbcips2 o9b7 t labeled B in the diagram shown. The ray rea7iscefj3l)r 50 obpbis9h3 2zches 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 lighy*cj-4o fkp c9t is incident on

  05.18: A student hold a hand mirror to obw*sy/34yxc lc. up l6eserve the back of her head 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 miex.lp3ccu /l*syyw 64rror 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 8ufsu- -b;o 29ffbmowhrshc/5.;d:tzat yc (when it enters a new material. Which one of the following choices is the term best associated with this phenomenf5(2rcobf9 za.h/t:8b u-w ;y ;-sscfomhutdon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm ic adjs27 9prt :.u,b :ziikaf:n a transparent material. What is the index of refraction of the materiad ,i2:fz97i:uj:ak. rat bpscl?

  98.04: As sound travels from steel into air,5 sbf:s(ydg *v both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differ j9ro2fuz8k a(ent index of refraction which of the followinf z8 92ja(kroug wave properties would NEVER change?

  05.47: A sound wave generated from a tuninh;(1n plh d/)aeb kmn6g 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 sound as it passes fromp6)nl (e;ah n1/mhbdk air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming g m.gzpf)bm6q.q6v89v upt i:pool emits a sound wave that travels toward the surface of the water. In .v)qp 96gpg:i.ubv8z6t mqfm 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 strik ih8ha+:p 3lsnpa54b zes a rectangular glass block with an angle of inci3:ha4pip5nl a s 8+hzbdence 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 hidwl0 2k 4vtbu0.2mzboundary as shown to the right. Whthv d2m .u0w2bk0il4zich segment best represents the refracted ray?

  98.17: Which diagram best represents what happens t9fdib,p*xef4 tf(en/.ebs 9go a ray of light entering air from water? Air is at the top in all diagre9b ffis ./ne 9bf*egt4xpd,( ams.

  94.11: The critical angle ftiuqxgd8 a2/p60v.e of a material is the angle of incidence for which the angle of refraction a6eg/ 8v.2p x tdu0fqiis:

  95.12: The principle underlying fii- ab)l0mehly 5itt6 p1krk(4 ber optics is:

  98.36: The critical angle in a6kstnd.;(iqpmno8 f,a: te. y 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 material X with an index of refraction of n = 1.5 to dz 8cyb1mw2 lvimn794material Y with an index of refraction of n = 2.0. If the swzcmby9d8 l42ni17 vmpeed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish betw dfyrhmq2pimjd d0 /b1,* 74br::dw caeen a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle bd m72*aw0 crmfd1yhdb r: :q/jp4d,i 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 ktadgmz t k..79:fe a9clear material. When the light makes an angldzmkk9t.:f e79 ta.ag e 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 indrs*uvlnl cd):, uz)d7qfp-/nex of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for tn7/lv qz)uc)p* dn:,ldufsr-he position parameters of the laser and target. The value of n is:

  95.31: A beam of light pmem2m oedbkscf w),1u/ x 5m6;asses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is trxemmk5m/cs 2;)b1mwd f6euo ,ue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium fjnu1+z z:as: 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3? 1zs fj: uz:+an

  97.24: The accompany ;xqpx8 (twp6,pf0lqs ing diagram shows the path that a light ray takes passing through three transparef06 ;xlpsp (wx t8qp,qnt 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 refraction?

  09.34: The diagram below :a7tn 0z i6bocshows the path taken by a monochromatic light ray traveling through three media.The symbocb a n:i7z0ot6ls $v_1$,$\lambda_1$ , 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 glap );m.,tm4lvdlip tm 9ss ($n_g$=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 - omg)o ga82rq7dmmr1tangular block of glass at an angle of -odgrrg am )qmm 87o12$45^{\circ}$. 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 il0qa 0 cq+v;hws transmitted from air into a piece of glass. Whiwv0l cq;a+h q0ch one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic lighi fmu;5toew c+q3w:f( t 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 the lettered rays shows the path of the l5w+ cut ( i:3;fwofqemight after it exits the glass?