11.24: Two wave pulses travel to the right toward a rigid boundary as shown. iott 4757j+n,pueej dAfter 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 individual pulses coincidoe757p4ijnte utj d+ ,e?

  08.30: A light beam passes thro qnqk242mxdb lt2 -1y67pydjvv+7s hq ugh the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the tran2m j2vqld6 +kyt1vyqh s2pxb -77d q4nsmitted wave?

  12.02: A ray of light passes straight dowt(0zxalw5zjptw6-lu6,s d u 5y u5y 5dnward through the point labeled B in the diagram shown. The ray reachewxt55pu 6z5stya( wlju-d0dzl, y5 6 us 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 refl jeo h/ .6,m qm8h(vba)zmj0qiection occurs whenever light is incident on

  05.18: A student hold a hand mirroryi .6c q0 fty+w na/tqrrg0e7+ to observe the back of her head while standing in front of and looking into 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 hea6qncf+w tyr.q+yr00it g7/aed how far behind the wall mirror?

  14.25: It is observed tha n-lnzn4n,d n9ztcik(sm7c -,t a light ray changes direction when it enters a new material. Which one of thnn zl4, mcc,s7nid-t-9nzn(ke following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in k -ffy bdht+0, nrchb08f0 g-hair has wavelength 400 nm in a transparent material. What is tht h0rk-bf-0g h8fn,y0b c+hdfe index of refraction of the material?

  98.04: As sound travels from steel into air, both its blik1:. g nf73mcnzl1speed and its:

  00.01: As a wave moves from on-chhv vlw0- 6sc/b*c aj*6whf e medium to a second medium with a different index of refraction which of the following wave properties would NEVER chavca6bcl - h/fw- hsvh0*c wj*6nge?

  05.47: A sound wave generated from a tuning fork of single frequency travels froj lik62 grrx6,m ajgrr6kx , i62lir (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 passes from air to rock?

  14.28: A waterproof speaker doj6i +i/ yy0cm*,aydpwd/pd ,b+ 7ttplaced at the bottom of a swimming pool emits a sound wave that trave/,,dy*tidiadpb7cyw /j6to + d +p0 ymls 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 ligh /r gl8t0cqb2i9jr.nwt strikes a rectangular glass block with an angle of incidence of /c.b9 irr nq8w tlj2g0$0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed towimbgo,d*)b3wl+m yn a:6gff)r8kv o;ard a point P on a boundary as shown to the right. Which segment best represg:io3mw dl;n+mk6b8 )o )* b yg,fvfarents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of lig)0::hq jiynuk ht entering air fy:i h :k)jqu0nrom water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of inciden 4 c8harh)u+6gu0d iu(2xkra ace for which the angle 0uuc6(ag4+2ahxru 8hdi r ak )of refraction is:

  95.12: The principle underlying cj .sroe 7x6k7vl(ec;/f0 fpyfiber optics is:

  98.36: The critical angle in a transparent substance surrounded b6;wi,h vg9b vh). guhcy 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 o(gu/ /1yqnn,bwo0:nv b c9dy of n = 1.5 to material Y with an index of refraction of n = 2.0. If th( yg bn9doy1,c w:nqbouv/n0/e speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can disd;am ))7d/k3+ pfqlavfu1 vm) 7tohmttinguish between a diamond and a piece of glass by observing the critical angle of the lightf)t a)tl+dm);/vo31 pamh kudqv7mf7 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 materiallcl6crqk n ,; 0.2w xnm66+qwjnwf v7g. When the light makes an angle of incidence equall,c 0w6kglc f62+;w6w7 vnrnxq m.jqn 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 kl7c o2xl: 6xmd-i4y v,sqasvmog -,/laser is embedded in a material of index of refraction n. The laser beam emerges frv/mqaxydi :4s c7g ,,2 -ol6mvoxlk-som 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 mv6lt 9av;og(.5ycupx.hk yd2edium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is tr.y( akp9v vg6.dcu;l5yh 2 xtoue 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 x x1wz qf3xkcq,lzv c4cw.+z;l)s7c3 as shown in the diagram. What may be concluded about the three indexes of refractxsxw4,l)z q1 3wl zv+k. cc37c ;zcqfxion, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passi8zla 5u4 lff3nt 22oncng through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of zcnt3f5a4lln2 2 fuo8 the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light rayru4(/;de mi tb traveling through three me e/bdmru(4t i;dia.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 traveling in v(2k t:egg4yxgwuc7)( i t+jn 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 rectalbj8;w mzo7 tm-sj8u mtj-z.*ra; 7uingular block of glass at an ang-j7 .r; 7jtio-maz mz tslbm ;*8wjuu8le 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 transmitted fo03yweeo c*p1 rom air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the glass? pe1w0*eoc3 yo

  14.44: A ray of monochromatic light enters the right-triangular glass as shown. zy *or1 74mk h2wdtq6jThe glass has an inde27qzyoj mr4 *16dwk thx of refraction 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?