11.24: Two wave pulses travel to the right toward a rigidih);c t1nij8b boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best repres ncb;t1)i jh8ients the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the 65 k0h8epvsgab jqo */air and strikes the surface of a plastic block. Which pairgbq pkjh*5/a806v ose of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight49k m om,m4dcl8bh4ss bin:m- downward through the point labeled B in the diagram shown. The ray reaches a flat misch-i 4 nm lbbo,mk9 :d8m4s4mrror 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 whenevrjb+,ibiow u+ s.z*q.er light is incident on

  05.18: A student hold a hand mirror to observe the back *rifiguy tn. r:o9/1 lxk+ 4emof her head while standing in front of and looking into a wall mirror. If kx :e.1mt*lio4 u 9fri +ryn/gshe 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 zv 5e0qbji5*p lhhy+; a light ray changes direction when it enters a new material. Which one ofq5li ;+ pyvh0e*5bjz h the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelengt*pkbl9 up y// 4v1b;isw.mzx oh 400 nm in a transparentbws9o1xy/. l /miuz v*;bpp k4 material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed anmzvz n o qu:)ub,.rg0yz:gaa,6-ac u2d its:

  00.01: As a wave moves from one medium to a second mediue4grz m46 w3qb9t9rbik0 wg-um with a different index of refraction which of the following wave properties wo4b r3gigq zk wb-re4w9ut9m 06uld NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travelsb6r65vp bo q,o+gwll( from air (witho6o5,wbb vp (+l 6qlrg 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 swimming poolqjm1lhw9l7d+ emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a lwd+lh97q mj1frequency $f_{water}$, 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 lighztncx9 4pq5 *it strikes a rectangular glass block with an angle of qxpt5z*4 c ni9incidence 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 direc ( s7la( ;*h(rzydzptcted toward a point P on a boundary as shown to the right. Which segment best represents the refracted ray?c7pa((l r(zy*h szt; d

  98.17: Which diagram best representn.o - k1tk/)rlxmi hmp 12w:uos what happens to a ray of light entering air from water? Air is at the top in all diagrams.o1w.pkrnkuit hxm :1/o- l)2 m

  94.11: The critical angle of a material is the angle of incidence for which thekq ly06-az)ny(1em etski0e: angle of refracti -01n:6e0qkaeez(yt lkimys) on is:

  95.12: The principle underlying fiberu 8 cx8tj9c8ce optics is:

  98.36: The critical angle in a transparent substancex n:+cqdvl,pg g- sb7m3u/2zc 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 mj.) nnytw1a2.j e5gb baterial 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 spj52n)b.e jw ybtg.n1aeed of light in material X?

  03.15: A jeweler can a )sqy l stw rttah7(4t2)42zp qjdv5*distinguish between 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 ang a2t wtl dj*st47s2)qv4 qhz)5tyrap(le 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 angcr1xqanz6* + 1gimwg1le of qr 1 gm1+inz1xacg*6wincidence 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 hsgrmdxgk5*/g .* 8glembedded in a material of index of refraction n. The lh k5rx8ggm**s/ d l.ggaser 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 is:

  95.31: A beam of light passes fro vczzgm4748qrm medium 1 to medium 2 to medium 3 as shown in t q87zvm44gzr che accompanying figure. 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 98f:2dmf holxmedium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3? m9f8:x 2f lhod

  97.24: The accompanying diagram sho+matvkq9 nx;2in plz3q3v (j4ws the path that a light ray takes passing through three transparent nql3 tamik; v4zv 29x (+np3jqmaterials. 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 shows the patxu7qoe3. bf p3hq/ac+w(. t qnh taken by a monochromatic light ray traveling through three media.The symbo/( 7n+qo..3fh qqbu3t pcwxaels $v_1$,$\lambda_1$ , 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 gl*(p/scuxzi9tf+ 5vmtass ($n_g$=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 thjt fby2vn t5z/e+e 9*m,gl gw3e surface of a rectangular block of glass at an,n l bvj9* fztg5+ gw2tym/3ee 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 transmitted6 kc kli38 nm)kwm ix1lbnl 22o/9;gft from air into a piece of glass. Whic8g flcn6w lkni)li29kbm;t /o 32k1mxh one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triaqgjvu i* -6* 6eyn,hdhj5 q6u7aw,sqw ngular glass as shown. The glass has jh,q s nvhy7dqeu*, ig66*wwa5 q ju-6an 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?