11.24: Two wave pulse05kuz 9 rst p1vpgmfi cf.0.qk, 9/pnas 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 su1pf0npmi9q0.r9kfvs,p k/ tg. c5azuperposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surfac :1yqz(a g8/:sdutxq1la2nsee of a plastic block. Which pair of statemenaqy1q: t n( ld/ zua:821gssxets correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the poor o8(ib2aat9int labeled B in tht( ao2arbo8i 9e diagram shown. The ray 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 whenever light is inciden3zssbw3 j0o*nt on

  05.18: A student hold a hand mirror to observe the back of her head while stan- di5u.s5g4z,jkn4 ixi*fr ab ding *usga5kz4-5i4i.f jxb r,ndiin 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 behind the wall mirror?

  14.25: It is observed that a light ray changes directionwsk3zxf5te6km 0s5j 6 when it enters a new mate 30k5xf 6mszskej5 6twrial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 5+- ( r.dogay-edbgh q:b18lo k00 nm in air has wavelength 400 nm in a transparent material. What is thg(edr:-od+b8q1 l-boga.k hy e index of refraction of the material?

  98.04: As sound travels from sty1vk :txuac-- qiy3s9 5kar )seel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different qwm ;0f hbo/q)index of refra/qmwf ho;0 )qbction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency tran5 n-wxc3tp wf7 a gu.q3whq..vels from air (with speed of sound 340 m/s) into rock (with speed qp57c nh. uw.nw3tf xw-3.agqof 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 9w m (p6ykp )wtn7;u5nwlmka(sound wat w5(9lmkpn7uk 6w(mn;y w )pave that travels 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 light *y b 1gjgy 6zc4cq68e qf-7jzqstrikes a rectangular glass block with an angle of incidefeq*jgc7y4gzj 6 8qz-6c b1qynce 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*mlm*zbn* o+itdk x ha*,)b0 jmgc64q a point P on a boundary as shown to the right. Which segmentg,*)nm **ka bxq 0t+ 4*o mjhcib6zdlm best represents the refracted ray?

  98.17: Which diagramos+;, sbpau 8ur*ihhy n 62:qio,v2q p best represents what happens to a ray of light entering air from water? Air is at the to2 *s pbqio,86 qi;srhyvao,uh +2un: pp in all diagrams.

  94.11: The critical angle of a material is the7swh8+y3 d n2xuq)fca angle of incidence for which the angle of refracti) +d3ycqf2 huwsa8nx7 on is:

  95.12: The principle underlying fiber optics is:*p -9 wtmazd8w

  98.36: The critical ang;/**9- ocgwtgpx xp7aj6o aqnle 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 frx/osyxpun8w y1 2frc,)fsc) ,om material X with an index of refraction of n = 1.5 to material Y with an iyr ,wy1cx/ss)xf2 u8on, c)f pndex of refraction 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 a u+ pf y sd +-fk5ws+rzm98o45mfgx9ldnd a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction ofzflpyug4d5 9fkm5f w++d- 8so+xs9r m 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 cle6;lcstnyji .h5er jl+ a)gi/:ar material. When the light makes an angle of incidence equ/e+ y)hii nslr6c :tjg.la ;j5al 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 of 34sv8ad ,je9i:g4yx7i gw htvfmd+ 9 d 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 targ v:w4sdethig yxm9d 8g+4i3fd a7v9j,et. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to meqbh;n/fs3d3 ;ev tt4 h q,d8awdium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and,/n34 q8wtf;3qa edh th;v sdb n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to mbrbrl0y c9i qng:,7t 0edium 3 as shown in the diagram. What may be concluded about thb00c:ryrg nib 9,qt7l e three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing t8nf9d 8xo *mje7 ium3dz mt6c)hrough three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the followj)3tzi dx m8oc dn96uf78emm*ing best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatmn9h5fds -a; mic light ray traveling sfd5h9;mm na -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 glass)span+m*qit ; ($n_g$=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*/2f,n-kp jujmou(d xz(f ox2j/cq- l glass at af n2 djuuf/x-o,*pq zkcjloj ((2m-x/ n 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 60jsj b:sjk r8 u72bq2l:0nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light bql2uj::k j2srjs8 b7 ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shq, ,l, ceu)xs,vp0umoown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the qeo, mlsxuc),v 0pu,,light after it exits the glass?