11.24: Two wave pulsesb)cdl2vej kn58 8mmf p2g/jwu * a*4wr travel to the right 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 center lc/gw 2ea8r*8fdjp4)u2wn jm5*bmk vs of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plastibd.,m-(mmv v2zj8e ckc block. Which pair of statements correctlmv z ,mbv(m.kejc2 -d8y describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the pom 4 qk1-jsgd9 ahmpd/-int labeled B in the diagram shown. The ray reaches a flat mirror placed at an q4-kg mjd s h1am-/p9dangle $\Theta$ 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 n o73 nb(o- zk)vjb5qllight is incident on

  05.18: A student hold a hand mirror to observe tww2/ (11vl j*subf exkhe 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 head how far bb(wvsue j */1w2 lx1fkehind the wall mirror?

  14.25: It is observed that a light ray changes direction when it eg7 7 k 29tj;g/x 2bdxz hx3qeh5qnm)iknters a new material. Which one of the following choices is the term best associated with this ph gnqdx72 g/ 9)exi5zbhtkhxk7qm2j3 ;enomenon?

  96.19: Light that has wavelength of 500 mn; pg/rk+xq/ gyaxrb37 ny9 3nm in air has wavelength 400 nm in a transparent materb9 gr ky/qnypa3xrm +gx/7;n3ial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its sl;/d ftdujns eb f;5e9 )*7ruapeed and its:

  00.01: As a wave moveqm+ei-l rz cap*g -/8ns from one medium to a second medium with a different index of refraction which of -crn+/ p8l*g qemzia-the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of singqetm-kuv 3i19 le frequency travels from air (with speed of sound 340 m/s) into rock (with1mk -e9tvqi u3 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 swimming pool emits a so e8s 1jxxlhhsq-/w5+ yund wave that travels toward the surface of the water. In the water, the sound wave has a frequ- q5jhwsxs1yxh /8e+l ency $f_{water}$, 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 os *v9fxeiqd )p-wtjo b 8.5ns5f white light strikes a rectangular glass block with an angle of incidence 95 e8ws.spoj* n5fti-x) dvqb 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 ttk )5iouu:i o) -76b+j uswymgoward a point P on a boundary as shown to the right. Which segment best represents the r5s k)iwubjo o ytiu+g :)7m6-uefracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering b c7op 1xhl)lw5s7m 7oair from water? Air is at thewo h71bx )l7lom7spc5 top in all diagrams.

  94.11: The critical anj4 h,rwpxy: ac9h8ui w,/bru;gle of a material is the angle of incidence for which the angle of refracti9a pr/hbcx , yu; r:4wju8hi,won is:

  95.12: The principle underlying fiber optic-(ialr;s7rnsq .he rcx*o3 *es is:

  98.36: The critical a,i5 +n nqxy8hs 704+ k 2m8z.eykbfaxnnf7tqdngle in a 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 X with an index of refraju3 nq80lo 68ulnot) mction of n = 1.5 to material Y with an index of refraction of 8lto l )jqo uun6803mnn = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a8ma pbsra * d2a1w4k6 *(.jikzbq2qr o piece of glass by observingpr1z(j*. w 2 abb2qa oqskrd4m k*6i8a the critical angle 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 into a clear material. When the light mak*xb w)bp.dlrxui 81k a3.o5pkes an angle of incidence equal .8 )xkudpabr b53wox *il.pk1 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 na (u hkqq58e3is embedded in a material of index of refraction n. The lue nqq5k3( h8aaser beam emerges from 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 1b;-ab+jnj7nfz* l(roe s23b/n gk3vh to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refr72nj(*sbvgjblr+; e/ nkzh-a3 o bfn 3action (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 (ieadbqjv.4/ 11m2 kkq8sn ga*9ftujas shown in the diagram. What may be concluded about the thqbsej918g1a. a4u* (f/dq2tkmvk ni j ree indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that 83d:we1v kaora light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectiv1 ek:v 8aowr3dely. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light rau+ v 4mrfz/3m(a:updb y traveling throub p4 (/ zmdau+3vrum:fgh 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 travoe70rxhmrr4 j1n)t 3v d9 )qaoeling 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 s rm.b1 4drtyge*u s;+furface of a rectangular block of glass at an angle ofe.mrgry;d4 b*f1st u+ $45^{\circ}$. 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 fro8- n m6tvu;apwm air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after itutwpm8 -6;nva enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular gl h06rpp+sptx g+1-s pv, 5upe gbb,p1jass as shown. The glass has an index of refraction of 2.00 and it i-p+6b1hbpt ,pvus0jpe1 p5g x,pg+rss surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?