11.24: Two wave pulses travel to the right toward a rigid rwk ak,6cl 7i4y .lxsh, l6b6zboundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses whlb.r s 4xk c,h al6zl,iwk667yen the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plas;;0j l +xcon4:mspwpotic block. Which pair of statements correctly describes the o:opp4wc0 ;lmn x+j;sphase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pa2f4fxn rqe jip8ix93nqnuh2i*w ;c.(sses straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed3eqfrj.xqi 4pfnu 2ni2in8h *x( ;9cw 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 reflectf 0j8x,u7r gv4:xiykn ion occurs whenever light is incident on

  05.18: A student hold a hand mirror to obsr( . *o7smp+b/trcb mberve the back of her head while standing in front of and looking ir s/br(+ .ot7bmbpmc* nto 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 of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes directio+tdl z40*spuo n when it enters a new material. Which onesz uldp40*t o+ of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 non uh 0y2.usxz0xna :-m in a transparent material. What is the index of refraction of the maters20:anyxo z h ux.u0n-ial?

  98.04: As sound travels froj1yi3r(m rw y26 u*bzem steel into air, both its speed and its:

  00.01: As a wave moves from hg;7wk3w 1h dkmlxui 9dt/l5*ap 8v:h one medium to a second medium with a different index of refraction which of the following wave properties ih/wgd3wvp 59k 1ualxktdh*l:h8;7 mwould NEVER change?

  05.47: A sound wave generated from a kk)a5/yhyzsb6srp; n2 ( nv l5tuning 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 kzny h);5p ay n6r/bs5v(k 2lspasses from air to rock?

  14.28: A waterproof ii4 .ectxei41speaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the watetei 1iic.x4 e4r. 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 ofq,sx yjuz*9wp g+htjbl 2q63 + white light strikes a rectangular glass block with an angle of incidencw 9xj+gl2 pqq*j s, zhu+bt6y3e 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 3enz*vec+qj9,h5b,.my d qb wpoint P on a boundary as shown to the right. Which segmqbbc jnwv z93y5m e+.*,he,dqent best represents the refracted ray?

  98.17: Which diagram best reprey+46v abpwt 5t6enz 0gsents what happens to a ray of light entering air from water? Air is at the top in all diagram6tgt4 p6wy5 nbe+0 zavs.

  94.11: The critical angle of a material is the angle of incidence for which tq,1z7b1jz vsd nrga )q.a4m/tou1/eu he angle of) r/4 ea.ugjv1szat/7 q z1,nqdbuo1m refraction is:

  95.12: The principle underlying fiber optics ismvxt/ b57m.o9 dyw7e q:

  98.36: The critical angle in a t1m.wlm ch/pf- 8x(kjmransparent 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 mk; 8var96 gkg5h* -zwn 2pkzuof n = 1.5 to material Y nr- *uhkz6vk2wgk p 5g8a9m z;with an index of refraction of n = 2.0. If the speed of light in 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 of gg 2o i,2f1hrrwlass by obserrg2h,i12 worf ving the critical angle of the 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 materi83ohtz o: yd:zal. When the light makes an anglt:z:8yo hz do3e 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 index of ray8,a ql/qv2 )ih,jxbefraction n. The laser beam emerges from the material and hits a tarv a/y bxi,2q l8a,hqj)get. 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 from medium 1 to medium 2 to medium 3 as showp;g azoe 1(gtwa8 m*2p6 l)bdhn in the accompanying figure. What is true about tg*o w8a)db6 l(p ate;zg1pmh2he respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as sh:zb(rk 2m5:qe 0;d3 zvx tzfbx1to*fzown in the diagram. What may be concluded about the three ind zove b1tz0*f xd;k3m25z(tbxz r::qfexes of refraction, n1, n2 and n3?

  97.24: The accompanying c-. vpj3mio t;+vzoc( diagram shows 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. Whiot3-z o+;im cpvjv(. cch of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochroma whaac50.6 v k;ua3shctic light ray traveling through three medi3 aw kca; v6.ch5hs0uaa.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 traveli/d,/ xl1ej frbng 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 s x2b56o3kyu e,gtb)tnurface of a rectangular block of glass at an angle bg 6x2n3)teb ouk5t ,yof $45^{\circ}$. 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 dmadk)s dihuf57iru(17yg :+n :bn-ainto a piece of glass. Which one of the labeled arrows best indicates the path7-s7+5argik:u hi bd1 m fdd):a (unyn of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as sh at9,9 y,rbrgnown. The glass has an index of refraction of 2.00 and it is surrounrg9r,n,t 9bya ded by air. Which one of the lettered rays shows the path of the light after it exits the glass?