11.24: Two wave pulses travel to the right tt:1jvhpjvg ;f k2 -l,goward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictu -v1l;kp:h, vfjt2j ggres best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the seuw4b-3op; ;x cgw3i xukli26urface of a plastic block. Which pair of statemxkiwcl4g623ow 3epu ; i;-u bxents correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeleuj .cr9p 49tk: p;tmtid B in the diagram shown. The ray reaches a flat mirmu;t pr k94:9tjct.piror 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 q1tel j/3/3g,yy;oyi her:beection occurs whenever light is incident on

  05.18: A student hold a hand mirror to observ6( a )iww wu4eeaxtx3bh9r ):e.tiq1be the back of her head while standing in front of and xw .th(w)4bw:a eeua9 3e1 q )rbx6iitlooking 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 direction when it enters a newdva8xph05iq : material. Which one of the following choices is thev5i :d8 ahxpq0 term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm;rx-jo ,ii-/ .koixru in air has wavelength 400 nm in a transparent material. What is the index of refraction of tj; uk--,iiixo/xrr.o he material?

  98.04: As sound travels from steel into air, both its speed aium2na1x um1 zf.tfyu44) c7ond its:

  00.01: As a wave moves from one medium to a second ryy ) t4gxzan;1-2 xn0cp:yezmedium with a different index of refraction which of the following wave properties would NEVyg:e2yn 1 tp)az;nc zx 4xr-y0ER change?

  05.47: A sound wave generax+wz c-1ovm6(zvh sk +ted 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 sound as it1+ov-xw + k(mzcv6z hs passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emit g6k11ff,jxmgzopgm h:q )x3+s a sound wave that travels toward thj1 )xk+:ofq3ggxg ,mz1 fhpm6e 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 , e83c,e z92ces, g8buprwictwhite light strikes a rectangular glass block with an angle of incidence o92p cerzcb3 ege8,s w,,t8ucif $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a poiq n6* pzj*:nltnt P on a boundary as shown to the right. Which segment best representqp* znl:*n6 tjs the refracted ray?

  98.17: Which diagram best reprmldp+*j f8/u/nmap .rr97,hu* mbrvoesents what happens to a ray of light entering air from water? Air is at the top ihp9pdoa r *n*8,urum7 fm+vbr. l/j/mn all diagrams.

  94.11: The critical angle of a material ishv0mp mp0,,yb g9m0qe the angle of incidence for which the anglevp hmmgq90m0, p,b y0e of refraction is:

  95.12: The principle underlyingi cnp)i30.pxiro98 y g fiber optics is:

  98.36: The critical angle in a transparen,9wkft(y 9h1llo3 jtr t 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 refraction of n = 1.5 to mwzv5s(enshwr2/vpo2ui: ;zf x6yr6 ;aterial Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in materialovsn:zfsy ep6rh v;2 5iz/ux wr;6w(2 X?

  03.15: A jeweler can distinguisc5 ur /3e vzv1gh:8pmqh between a diamond and a piece of glass by observing the critp/u :rh1qmcgz835 vveical 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 pz s- z8v/oib/a3l; yyfrom air into a clear material. When the light makes an angle of 3;aibv8 l /so zyzy-/pincidence 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 laser is embedded in a material ofdgj pef46g )4z index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying f)pd44jze6g fgigure for the position 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 7ejp/ 6yrt l+:wkw 5itucz5e*medium 3 as shown in the accompany/e: jkew zpri5u+ytc7wl56*ting figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medi:a0 )qzol*hk p 1ju;yium 2 to medium 3 as shown in the u ykoqa1)0p iz; *lhj:diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanyarhrs28* p ,xning diagram shows the path that a light ray takes passing thro,8 rha p2n*rxsugh three transparent 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 shows the path taken by a monochromatic w3tq1qq6idu ;light ray traveling through three media.Tuw1q q;d6 iq3the 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 m8 4-2x.ih wtdf0nadu cu/2xqglass ($n_g$=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 rectanvang4f5 q,67n0xkoqma:4 kqq gular block of glass at an angle o6 aaqqnk4qf ,5nxq70vkg:o4m f $45^{\circ}$. 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 transmittedw )7g mgtd(yqe5h0r b4 from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters thb75rdhgtewq04 y(m )ge glass?

  14.44: A ray of monochromatic light enters the:qld( v.efb /l0o wwti+0- gxv right-triangular glass as shown. x0w/l .v (+:q dobe vitwl0-fgThe 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 light after it exits the glass?