11.24: Two wave pulses travel to the rightw-.h1 2zyw0q dbz1)pv chapr8 toward a rigid boundary as shown. After reflection of the triangulpd-0h rwzqwp81by1zc2h v .) aar pulse, the pulses will interfere. Which one of 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 ho*:f4upq+0u y( - otvby9mahthe air and strikes the surface of a plastic bpyu*f mhbt + q 9v0(-a4u:yoohlock. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes ,-iy ciuxp i yj(cr-)r-m aa,7straight downward through the point labeled B in the diagram shown. The r,u-a7pm icr ,cjxii( a-ry)-yay 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 occurs wn- (npo 7;rlcz ks0wc2henever light is incident on

  05.18: A student hold a hand mirror to observb-4uciut 4n .ye the back of her head while standing in front of and looking into a wall mirror. If she is ny4b icu4ut. -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 gw4rx f;iin2 ws5;dgi -k*gj0that a light ray changes direction when it enters a new material. Which one of the following 4jgn- w2;iiw r5 figx *gsdk0;choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air hay5m5ijnc3sb;c+f 3nps wavelength 400 nm in a transparent material. cpbmc ynsn; f5i3j35+What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its 75g bqm9-idx.tq s *respeed and its:

  00.01: As a wave moves from one medium to a second medium wskiq 1e rj3pnje46)k3ith a different index of refractionknei6 rk4jp3 1q s3)je which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork o0-h-ez r:xqp.:/ mmmddqr/a y f single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound.qdmr: m0 //:xymp e-zr-hdq a 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 y j/u7t1 ou+bh+f pm g(vji5r7a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave+h y+g751 ip ofj(bu/mtvur7j 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 on)x6p ,kz ok9wf white light strikes a rectangular glass block with an angle of incik 9 k,xpzw6no)dence 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 izhj/0f4vc6l as shown to the right. Which segment best represents the refracted rlzf6vcji /0h4 ay?

  98.17: Which diagram best represents what happens to a ray of light entea q/q ;ao8lur0q w4u 0(ns2mitring air from water? Air is at the top in all diagrmu wioq(0ur0na /;8t2s aql4qams.

  94.11: The critical angle of a material is grrjo,w +q+n-l:b1 6dmja. krthe angle of incidence for which the anglrbarjmjnlk+ ,q+1w:og- .6 rd e of refraction is:

  95.12: The principle underlying fibey- 8vcu/1a xhmr optics is:

  98.36: The critical angle in amj 3:nh9 6f j:ldu nkaft+j-tlqu) ;l+ 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 tqjf m-* n6n(iX 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(*t-n q6jimfn 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 obse 3ekzpks,z)i9dd:tuye./j/ 8(a zxxt dd8+dxrving the critical angle of the light in each material.d d(ukyps zzxxdze: 9+t3dk x/ jitade88/.,) 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 material. When the light makes an a-w vp4wlf2 xn 9ndz(o7ngle of9v zwp2woln-x(7f4d n 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 oxcgt 2e.m)-*fjtz ;ohf index of refraction n. The laser beam emerges from z.*fxtc e-m;g t)ojh2 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 from medium 1 to medium 2 to medium 3 as +84m ojbv;zwi shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)? jz b8w+oim;4v

  00.14: A beam of light passes from medium 1 to me)ts- da.k 4fqqdium 2 to medium 3 as shown in the diagram. What may be concluded a.k-sq tdqaf)4 bout the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lpqu1wz1 k8tm2 ight 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 describes the relation between the indices of refraction?pt18m wq ku2z1

  09.34: The diagram below shows the path tany j* :cl.hgupep3(m,/z z.wnken by a monochromatic light ray traveling thrlwe num*nc/.hyp:zpgj ,.(z3ough three media.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, l-o cba(d9aa traveling 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 block of j0khw)h3o zu6d7+yije+9a yqglass at an any z ek+o0d97wh3q)jiyuj+a6h gle 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 transm uy7s-cyt lg,1itted from air into a piece of glass. Which one of th7gyts,y cu 1l-e 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-triangular glass as sho;o )ik72:7bb he +domeru4/nrv+l b o*qwoix5wn. The glass has an index of refoh2:ik* ; eewo+4 m/ rlv75qoiud )o+brb7xbnraction 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?