11.24: Two wave pulses t yw wfdvsjxwrq0e1op4 z6d)7y56 b-q3ravel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of06bfs)4q ydyw37jpvzwqde-5x 1or6w the following pictures 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 5iddusf9;zak3rv)z ; ,/ b drethe surface of a plastic /z,;a u;v d)ze59r3dsib rfkdblock. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight dofb t4 03e iaye;*gj6eawnward through the point labeled B in the diagr;ay f0gj6 e3bt i4ea*eam shown. The ray reaches 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 occu3oagpo(e x*q 1b au 9n4ws7z3 m+jfel1rs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head 0 b(yqmy3ys7vms8 sp(xm p bv+x7)7yewhile standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she hold8 xb7x veymyypv yqsmb7(+ )703ms(sps 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 a new man zas ad2aj98+ 8nfets9a8t0sterial. Which one of the following choices is the term best associated with this 89 88d2 azj+tans t9sesafan 0phenomenon?

  96.19: Light that has wavelengthm* 3t2:qwgnc 4ytdur/ of 500 nm in air has wavelength 400 nm in a transparent material. What is the indc mqg2u:d/rytt*4n3wex of refraction of the material?

  98.04: As sound travels from steel into air, both its speed an2gjd6 8n-kq )hm-e 6jdjs4lw iaz6/c qd its:

  00.01: As a wave moves f xiri82*ps b/from one medium to a second medium with a different index of refraction which of the following wave properties would NEVrs2 ib/ipf*8xER change?

  05.47: A sound wave generated from a tunin fo+ f(q p)nt4k pe*0zjy.lqg h.ru6b7g 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 iejpfn)7qb* q.k pt + guo.ly 4f0(zhr6s 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 rqqh t. c(j9np.,ni .lev u453k,nteqa swimming pool emits a sound q9n.qirce k.equ(5.t4h3tn, vj l,p n wave that travels toward the surface of the water. 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 of white lightbw :-uz;fee.u strikes a rectangular glass block with an angle of ibe-u;uf. :ewz ncidence 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 boundary asjk;*u2/h/ml//wq*k dqobxl6 f et- hp shown to the u-pew/t fk md/h*qx ho2; bqjk6*/l/l right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of (svg2z+xerl ;gv(db (vcn -o ar0o*-v light entering air from water?z0 x2 n(r vvce-br;(oal ( o-dg*svv+g Air is at the top in all diagrams.

  94.11: The critical angle of 6 d :1uktkrdg5a material is the angle of incidence for which the angle of refraction iskk: td6d5rg u1:

  95.12: The principle underlying fiber optqvwj/o* y mu;(ics is:

  98.36: The critical angle in a transparent substance surroum -e m2o6qh:ao( u,iuwnded 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 mateu1*pslxn0 *h arial X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If th0ua*1hps*lxn e speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish betweenxh,o7h6 d nm5o 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 1.52h nox6o5, mhd7 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 8 (nk+puq*xflair into a clear material. When the light makes an angle of i+q*(lf8xkun p ncidence 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 iskvfn8) qmb*x3 embedded in a material of index of refraction n. The laser beam emerges from the material and hits a ta qv8b* kmx3n)frget. 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 /)k *hbd 5c4yik qsux,from medium 1 to medium 2 to medium 3 as shown in the ,bk45h/cu is)xqdk*y 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 medium1 1rx2zbtd4 j2n -z6nz+wsp af 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refractj2nzp6w-z42dnb 1sx+ f rta z1ion, n1, n2 and n3?

  97.24: The accompanying diagram shows the path;c ms4 lf,zntrxp5b.7yj+ii+ that a light ray takes passing through three transparent materials. The indic7m4 +cs.zl 5t;j ,yrpx+bnfii es 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 thek1t cce:lrr-6 path taken by a monochromatic light ray traveling through three media.The symboltr6k:1-cl cer s $v_1$,$\lambda_1$ , 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 travoncwt*/* e-zwt(f. :c;e9ib qlag(tceling 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 surface of a rectangular bhr6:axo k+qz n: +i*m)hmnibed ( 2o;elock of glass at +h;2e*aribd(o:6 mk) nin:emx qo h+zan 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 tram-wypm:h.ud3 h04w qo nsmitted from air into a piece of glass. Whic4.o3q h wm:wmuy-ph0 dh one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochro :6u.rp (x f,fi; t2xirqdscl6matic light 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 ;l,qi(62c rf u:sixxtrpfd.6lettered rays shows the path of the light after it exits the glass?