11.24: Two wave pulses travel to theu2s bzo.896 j v7cb .yg;ipj;v7 znffc 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 supei.u gzn.;;6fo7y7 cb jp 289cfzbvsvjrposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface * u)8hjt1mpeb gy98t yof a plastic block. Which pair of statey8u*bj1m 8 et hp9gty)ments 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 labeled B izk*4c ,yt g;ecc2.hxi n the diagram shown. Thethy ec; 2c,x4 cik.*zg 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 reflectitu+ux gox39+qwti 7,zon occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back o gqrh0jcxj r1eoppg612dy*9 3)kxv2 f:-ipin f her head while standing in front of and loo:veqip60 of y3p dijn9h21-r)1gj* 2rkg xcxpking 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 /im ,eo6 7adkuit enters a new material. Which one of the following u 6mki/od 7,aechoices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 /urmvnqos 9.2hyr 19azoth8 ,nm in a transparent material. What is th/ru 9h,n2o.rtom hs1z98yvqae index of refraction of the material?

  98.04: As sound travels from steel into air, 10 *d)qi ybo9c-2mo kmyjg6; ciuvb8 kboth its speed and its:

  00.01: As a wave moves from one medium to a second medium with adov o 7u zr70psx6k*f1 different index of refrafzrup71kx 0oso6*7 vdction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork ofooe,n, e3n :vqdqa+jiy): y7y single frequency travels from air (with speed of sound 340 m/s) into v ,oyoyqn ny :3i)ea+,qej7:drock (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 placed at the bottom of a swimming pool emits a sou6w:. g.. l /( duvucldxgk8wfznd wave that travels toward the surface of the water. In the water, the sound glkcu6wd .ldvu.: / fzx(w.8 gwave 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 ligx j.wnhq9ae/hb31k, xht strikes a rectangular glass block with an angle of incidenc n3hejqhwx 9xa1/,.kbe 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 d yn-5t;l8 lbetoward a point P on a boundary as shown to the righ;tl b8d -5eylnt. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens59uiutp8uft uk +ayc,-gn9: x to a ray of light entering air from water? Air is at the top in all du9+n8,9xy atg5upki - uut :cfiagrams.

  94.11: The critical angle of a material is +ff 4rnc4d )ug4af1 czthe angle of incidence for which the angle of refraction 4fccu)r zd4 +41ff nagis:

  95.12: The principle underlying fiber optics - 575cxiobse8dwl ch .is:

  98.36: The critical angle in a transparent substance surrounded by air 2: oh)qmw49yfl5nr-m9r byteis $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels fw 04x.hhkw/wnx; 6ypm rom material X with an index of refraction of n = 1.5 to material Y with an index of refraction of n64pn kxy h w/xw.m;w0h = 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 bn7* kr7a9jcppq9 o-t aetween a diamond and a piece of glass by observing t7 - qcaotpj p9*rk97nahe 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 0n5k-vybr2r9 *(s 1x u ijsrqsmakes an angle of inc1(nku sxrrr qsjbv 0*iy9-52 sidence 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 iq/bq3vn)ha:fkdqh58 2vc* vmk i d0j2 s embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accbc:q hm )v02 hkqj/3v *kf8q nd5aid2vompanying figure 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 mediuh8a 7p 4qt1)wkfwd1xx m 3 as shown in the accompanying figure. What is true about the respective ind4xq1d1khpwt7a8 x f)w ices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to 6fo h*9;pa olviwa-v+1te*qw medium 2 to medium 3 as shown in the diaa96v*l*e + -awoovipw1htf q; gram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing xo:f -5dw2 amtgd6b5eac) 7githrough three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following bese gxc7bimda5w2) df5-o 6tg:at describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic lig dqs4,xd1 e pwj5t)kj9-o7cyp()lht fht ray traveling through three xfd)-t5hej) t19, dkyl wqoc( 4 p7spjmedia.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 gl/(9lwjpj h, :awmpjwqa 0*;ucass ($n_g$=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 rectangul7mrx9 metljur.q( )*kar block of glass at an angle of9* e7mlkqrtj r.mux() $45^{\circ}$. 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 600nmajv (g2 .iaxvxma+7(s is transmitted from air into a piece of glass. Which one of the labeled ai g2sm+ xv(ajaavx.7(rrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromat.rt ,j-,gu*moluu uy7 4 0rjlen1m- mvic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded yv-lmm.ejtn,7*m ,- ljuuu4rour1g 0by air. Which one of the lettered rays shows the path of the light after it exits the glass?