11.24: Two wave pulses travel to the right k 97cloxmmu o8bg gp)j*ibuc::j1e39 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 cepm g739l*m9g o)81oeuk :iu :jb cbjxcnters of the individual pulses coincide?

  08.30: A light beam pas:9y0ph c5xz8x fbdi h( a-5mukses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase 0h c i:pz-a hb(ux5k9yf x85mdchanges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight down-y8ew+;85s1ab5k kfol r kvf dward through the point labeled B in the diagram shown. The ray reaches a flat mirror+8;-oaldfb8ke y vrw15s 5fk k 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 q*cn: f x2i,v ylnp,j:is incident on

  05.18: A student hold a hand mirror to observe the bo c6*aw6qoy . ze6f 7t/vzy,xback 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 y 6.* vowqay/ of6bx6e ,zztc7her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters m87ko tck(/ll;cd. vma new material. Which one of the following choices is the term best associated with this phenomentc8vm/ .lkolk;7c d m(on?

  96.19: Light that has wavelength of 500 nm in air has w4pa0g 0uwjtyq/5qb h*avelength 400 nm in a transparent material. p50ugw jqqht4ba *y/0What is the index of refraction of the material?

  98.04: As sound travels fromgg bbcsg +/5t a/k79mo steel into air, both its speed and its:

  00.01: As a wave moves fromc+lce xogo2vi 2cb 4/4g10e bm one medium to a second medium with a different index of refractio1+elmg 4c0 b eo2bcvixo2/gc4n which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork e5mug 8b(d +l) 1ijbrjof single frequency travels from air (with speed of sound 340 m/s) into rock (wib1im5gjr 8d e)l (ujb+th 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 the82-.* 2dgxlhf2j3m 2 jy3szeqbmvsb x*fth .a bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sounsmf2 vhh-g..* x3fj8asb23t* xbdlqz2y mje2d 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 strikes a3vmfnw5l1i 5 e rectangular glass block with an angle of inc5 m1wn5evfli3 idence 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 a point P on a boundary as shown to th 6u8pttbon)*xx d;h8te right. Which segment bxotbh*pnt xtu688 ;)dest represents the refracted ray?

  98.17: Which diagramsxbhg(9ot4 le b*1 icacii*vh 263mz5 best represents what happens to a ray of light entering air from water? Air is at the tophthcabi *sli9mx2c eiovb5( z 43g*16 in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for whi)ma wa/ 6:oojgch the angle of refrgo6 m ja/:a)woaction is:

  95.12: The principle u3ik qpz)(vn26nc riedxn/q r4i6 yw53nderlying fiber optics is:

  98.36: The critical angle in a tranlkxo81ky(lf8m/ /kw)gtn 8 i rsparent 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 f9kvcz9t : (f9+pxc osrefraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of cfzs9 op cvk:fxt+99(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 v80orc6f33v6h9izmvt5k7)obd s vv qnd a piece of glass by observing the critical angle of the light in each material. G m30vi6 3 vq6 8dr 5kczvbsvf9ov7toh)lass 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. xlwu :1e)qv+e10sypw When the light makes an angle of incid)py+ w:x ee1l qusw0v1ence 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 of index of refraction n. b 0s ut//s2x 14oc nz/2kv2-syc pywgaThe laser beam emerges from the material and hits a target. See the accompanying figure02y z/cnc/ u1ax k2ytgsv4wobss/- p2 for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light pas-z 9* m9t+zc0axy39mhx -usgtm(gd nbses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. Wh+ cmt z0 m-xg h-gtm*y93anuxd9b z(s9at is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from msm ce2jn6ev,n d69+dcjds-i:edium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, nc+9,jn62s -:v n d6dcied ejsm2 and n3?

  97.24: The accompanying diagram shows the patv0 tig+e9m lr/h that a light ray takes passing through 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 er9l/v 0 m+tgirefraction?

  09.34: The diagram below shows the path taken by a monochromatic v ;n keky t,yj1fv(z+7light ray traveling thrn7(fy +ev1yjv ;k,kt zough 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 /zit tc/) oxw4($n_g$=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 fb-6+z6ofuhis*5fnxu-pu s6c 6c 6 j bsurface of a rectangular block of glas ufp hucs6+6-5o 6ij66nxzf* -fbbu scs at an 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 transmitted from air into a piec hb4 l+sr vcw7t-6mdh1e of glass. Which one of the labele-+6smhb 1l hdw74crvtd arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enrpu 9q*b zzbo ,95vnk3ters the right-triangular glass as shown. 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 light aftkub5zv939z,n qob p*rer it exits the glass?