11.24: Two wave pulses travel to the right toward a rigid boundary an/6chlpgd)dej )wh64 s shown. After reflection of the triangular pulse, the pulses will interfere. W6ld /chj pg )nhwe46d)hich 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 mjm j(l(96: vaxk.hbvkt 2q(l through 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 trans.(xkvj 2qhl(ja(b69:kl v mt mmitted wave?

  12.02: A ray of light passes straight downward thros;ynwr:iq 1lfy4oq, +ugh the point labeled B in the diagram shown. The ray reaches a flat mirrorfwr:q ,oi+; qlny14sy 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 occu7j)bme8g adj1v +v ls2rs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whitl1crcs/nhct8l3b7k *v gf* 5 le standing in front of and looking into a wall mirror. If she is st7gkc* b83*vcct5 tfrh l/ n1slanding 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 that a light ra-u c/ qhwz/ub.y changes direction when it enters a new material. Which one of the folb qu.z/-wc/h ulowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 5003 uw4tj0-ahb a nm in air has wavelength 400 nm in a transparu0at aw- h4jb3ent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both ia ts9/c/gwqxga7u *k 9vdcr 7-ts speed and its:

  00.01: As a wave moves from one medium to a second medium wne tt ik7z-2s9ith a different index of refraction which of the following wave prtn k72z tes9-ioperties would NEVER change?

  05.47: A sound wave generated from a tunings8k1.j tadxx fwjh 060 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 sound as it passes fro60k.jwsh axj1xtf80 dm air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a sounj52 s.vni w4 uwt 2(zngr:*ucdd wave that travels toward the surface of the water. In the water, the sound wave has a fr4z t(:nidu*cwnv gs r5w.j2u2equency $f_{water}$, 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-aui/*p zp-eml agz-, kns+-q rectangular glass block with an anglea /+g u*zzkq- i-s-pp ml-ae,n of incidence 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 directedvxzn n28,ss ,(wc +j6z60f gti-bxmlx toward a point P on a boundary as shown to the right. Which segment best rx ,8mx 06 igb wxz-scn6js+lzvn2,t(f epresents the refracted ray?

  98.17: Which diagram best represents ; .yg++5p z wwxecqvt+what happens to a ray of light entering air from water? Air is at the top in alqgx+w;t+ve5w .zpc +y l diagrams.

  94.11: The critical angle of a material is the angle of inc2ide/x0i1 rakidence for which the 2rai0x/d1k eiangle of refraction is:

  95.12: The principle underlying fiber optiw*);q hlf9moq cs is:

  98.36: The critical angle in a transparent substanceqgzw*/ 53/f e cfuwk0m 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 2ki3jo ur,+ztan index of refraction of n = 1.5 to material Y with an index of refrai2u+ rtoz,k3jction of n = 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 a piece of glass by o;m6 ze-ehbyh+ bserving the critical angle of the light in each material. Glas6yhze; h-mbe+ s 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 ;q q* ( 7vlfb./mdmsiy6 5(qaa(of7rkljmpv.air into a clear material. When the light makes an angle (qf a;7i7rmj 5*(mb(saf lmvq. k /lvqpyo.d 6of 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 laserb tec fj8vo;(. is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The val bf8(j oe.ct;vue of n is:

  95.31: A beam of light passo*d;8i3 elu.y2 ghonq es from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, nl2 ged iquy;o3nh.o8* 2, and n3)?

  00.14: A beam of light passes from medium 1 to t7mnct70w 9rlv 5q*sw medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refractnw9 cq5s7t 7t*0wlr vmion, n1, n2 and n3?

  97.24: The accompanying difevh 3/u6f;hkflc /3drx x4v1agram shows the path that a light ray takes passing through three transparent materials. The indice hx;1x /d3urefh vf36/fcl4vk s 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 below3a8*)2qo*dl nm)hmv + kv1hvt0pnh ks shows the path taken by a monochromatic light ray travel0+h vmvpl*mknts28 hvh)*3 d 1a)nk oqing through 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 traveling in glassii3i 7q1me kq- ($n_g$=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-5t5i;joliy 4e xsm,x1 ;)ei7u kg qsv incident on the surface of a rectangular block of glass at antjmg;)71 5x;iok sie5xlesiy 4u, v-q 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 zv:f p4 cpl:(rzkq//n e 0,dpctransmitted from air into a piece of glass. Which one o:f/d r q(0,vzp:cpl 4p/cznkef the 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-triangularo dy5c4:.gujh32 j+ vnwp:pge glass as shown. The glass has an index of refraction of 2.00 and it is surrow dohygevjp+unj :4.c: 3gp2 5unded by air. Which one of the lettered rays shows the path of the light after it exits the glass?