11.24: Two wave pulses travel to the righm4a n5a,fpbt) t toward a rigid boundary 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 when the centers of the individual4)t,5b fm anpa pulses coincide?

  08.30: A light beam passes through the air and str l.9sls 6wljy:efdnl-*ud09: mbc3h aikes the surface of a plastic block. Which pair of statements correctly descr6 al::f nle9y3ud09h wl-lbds m.scj*ibes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled 1o2(u p;9* sfxrm4cp9df g czqB in the diagram shown. The ray reasq;zp*cu x9 omp df1gf(r24c9ches 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 whentt0;( hqlh gf0ever light is incident on

  05.18: A student hold a hand mirror to observe the back of hlxt14;m) l6f eqrpm6f er head while standing in front of and looking into a wall mirror.m6fq;xfltm14r lp6e ) 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 direction when it enters a6-c nggf ea 9-k1ivjrei72 n/x new material. Which one of thc xn2geg-n/r-1e 7 jiafv ik69e following choices is the term best associated with this phenomenon?

  96.19: Light that has wakx:*xo ci r*wqf 66qi;velength of 500 nm in air has wavelength 400 nm in a transparent m6;rickw qq * :f*6xixoaterial. What is the index of refraction of the material?

  98.04: As sound travels t21ytl/e : 5ar8mphi yqav 2f5from steel into air, both its speed and its:

  00.01: As a wave moves from onvrcu*)5dsswmp3 s17d e medium to a second medium with a different index of refraction whip)v13udrws 5s*7 mdc sch of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fm4suvca g;0 sf,kk(e)eu+ew/k( t (np rom air (with speed ofkkuce( 4p ave s,/u0sgm)t;ek+f( (wn 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 swi fghhb2c/(u p8a)so+vmming pool emits a sound wave that travels toward the surface of the water. In thv ou ch2gb(a8/ h)fs+pe 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 re+ 5amncvd qi(+ctangular glass block with an angle of incidence of m n(vqcia++5d $0^0$. 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 b8i dca2 zusq7.yr2 e2woundary as shown to the right. Which segment best represenz8.w72q2ie 2 rucdays ts the refracted ray?

  98.17: Which diagram best represents wha q)4iwf9/v / s p/;ox9ztpdkobt happens to a ray of light entering air i4xd9z/ fvotp //; w q)b9ksopfrom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which the ww-upei. udasbqpcf ec.j4:+*+ v 5r;fqbw*;+. j cswv5iuepuc:dr4.-pae + angle of refraction is:

  95.12: The principle underlying fiber optics) +7rf gbcz(-v-w hvba is:

  98.36: The critical angle in a transparent substance surroa x)r vz.j-vk+v,8g1 mz.5 zmvp m6bvdunded 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 om,xus.0m1t; fq -p 1frur cw)1vuf og;f n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light ivsuu;cf1 1,ff) 1rg-wp;qoumr .0mtxn 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 glass by 3ffae,f4cm y,observing the critical angle of the light ie,f,y a34 mcffn 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 mater6winptfkg iqb .k mw z3y3:7/i)vhrdlfx ) ;7/ial. When the light makes an angle of incidence equ.ktqlpw/7zk) 6): vf 7wg mn/33hi; x fybdriial 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 refractin 5qexy8by:(ton 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 vae:y8 ynbt5q(x lue of n is:

  95.31: A beam of lighm dlc8jm t6c)0t passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What ist80dml mc cj6) 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 medium 3 as show q(dekloc zui1g w;*+z, (ju9hn in th ,zzcoi ;9kd1w+(luj (ue*q hge diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyih(nc +v2 v8zkbl /jzvm/7ks/yng 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. Which of the following best descriz /mj+8y(/c hvknblv2k /s7 vzbes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatipc((1(mij vv 6es s3tpc light ray traveling through three media.T spjvtp3 (ci1(6(smv ehe 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 traveling in u(ij)hjam .s8glass ($n_g$=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 i6cgni p;1+c5(dr mv*nrwsv s5c 6fz q7s incident on the surface of a rectangular block of glass at an angle1 fv zc np6qsiv+7;m gr(65wc*rcsnd5 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 iv bt6hx* e:lgr21xxx7czcsq/9 k++ pt s transmitted from air into a piece of glass. Which one of the labe:gr k/lcx*pcs27 x69+ +qx xttez1b hvled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glawootmm 97 (q)wss 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 t( )o 9wqwomm7path of the light after it exits the glass?