11.24: Two wave pulses travel to the right toward a rigid bounda8vuoq.se* ck +n(vmx. b ex(mm)b-d2jry as shown. After reflection of v m.b- e2oqusjb8 )*mx+nd.mx(v(cke 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 individual pulses coincide?

  08.30: A light beam passes through the ai6(oxns ; w5 wsbmj/8:nrva ej*r and strikes the surface of a plastic block. Which pair nex;bm:a6on*sw/58jjwv rs( of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the plw69rzh y0e/9m , pncrz 0klx..etz5woint labeled B in the diagram shown. The ray reaches a flat mi9z0r9 zxt /.p.,wk5yz6lh0 nreelmw c rror 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 whenever ligh;+iiq9ai9msjki5x75h3 chbq 5-jqv yt is incident on

  05.18: A student hold a hand mirror to observe the back ofct18w )4 amoqlxi94/x5 ks ihw her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall m1wk/o9q xs) 4wh imtc xia4l58irror 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 dipj *:u)pff f* ad6h6bxrection when it enters a new materiah j)af6:u*6*ppf f dbxl. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength -nn/.ew(q qop:jj(t6 llg.jhof 500 nm in air has wavelength 400 nm in a transparent material. What is the index onl(/q loj6p q: hewtn.(. jg-jf refraction of the material?

  98.04: As sound travels from steel into air, both its speed and 5dh::-sfom-t1gnx, j kf6q vf its:

  00.01: As a wave moves from one4q:mad1xfpocxlj1: - medium to a second medium with a different index of refraction which of the following wave properties would NEVER chad c:p1 xqfj :a-ox4m1lnge?

  05.47: A sound wave generated0pd08nodvy2, uhmc 6f*m z2 2, ocgryrlfo2z- from a tuning 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 sc yrdv,0, -*2o 2 mz2ofn8p l2od6r0yuc fzmghound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimh/dxsefm7 15,ff xe7c ming pool emits a sound wave that travels toward the surface of the water. In xe5sh / x,7m7deffc f1the 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 rectangular glass block wi1bwow,min qq 4yg fx7d v(v :udg)j :i1j0g-)tth an angle of incideq ,b v4dqigvg u:fy:jd)710o-in1g (twjw)mxnce 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 towarns+8tz5jou5qii m w3/d a point P on a boundary as shown to the right. Which segment best represents the refracted raz/5wjs+oq8iu3n i5m t y?

  98.17: Which diagram best represensg v-f0d,n oc 6osb3 /g*spn*bts what happens to a ray of light entering air from water? Air is at t,bs6dfc/ vongbs0s *g*n-po3 he top in all diagrams.

  94.11: The critical angle of a material is the angle of inciddidn *f6uv r+6ence for which the angle ofv 6dud6+ ri*fn refraction is:

  95.12: The principle unde7 9q)+n g ebschltxsr,1v(g(b x l(8utrlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by x6 i7;+x,o2cc t8wiu a4iqblo 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 i u: -csswk+xb9ndex of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If tws-bs+9u c:kx he speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguista(pe,/rc,sqs98ly r h between a diamond and a piece of glass by observing the critical aerss(9 ,c,r p/8qtlyangle 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 6/9d( wfcqc1zm n4ren7wu 0uj into a clear material. When the light makes an angle of incidence equal w1zec /du 9jcq46w0n(fr7umnto $30.0^{\circ}$, 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 ::oxum2 evz 6cin a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the v:ucexm :zo2 6position 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 shown;6 p4 kn-(tzuue/ lkiw in the accompanying figure. What is tru ;etnik4(w- ul z/pk6ue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passmzs 0jm cdbkz);bp*)+qgv 5/ ges from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded a*5m)k p 0+ gbqmvs zj/)cdzb;gbout the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lighqceacs2j/3k+r b , .uwt ray takes passing through three transpbq. uejc3k+a,w s /2crarent 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?

  09.34: The diagram below sho.; s1q: ar1mr-q 7cptl;qttvfn nxu3- ws the path taken by a monochromatic light ray traveling through three media.The sy;cu1tqn-rx 7:1r. m t3;n-al vfq tpqsmbols $v_1$,$\lambda_1$ , 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 indecw7ky,cb:+/h9 -h6yc(auib . jli8t ye qj2 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 surfac7m i3i5p6vr uom(xa+ae(yn 1 ve of a rectangular block of glass at an angle (7vn5+1m 3 rave x(6umyoaiipof $45^{\circ}$. 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 transmittli ii;w,g0i6 yz-z; qned from air into a piece of glass. Which one of the labeled arrows best indicates the path of the ligilq yinz;i-i6w,0;z ght ray after it enters the glass?

  14.44: A ray of monochromatic light enter4i yepnp) -dnrn0n(l, s 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 lettered ryp idnl,n 0e4 -nr)n(pays shows the path of the light after it exits the glass?