11.24: Two wave pulses travel to the right toward a rigid boundary as shoomh1fl5+pf bg iz(d rz278 wzzont-/7wn. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposzdz-2zw1/fgz p( rml7bhn oi8ft +7o5ition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passet s2sdxnx53eaati(/ :s through the air and strikes the surface of a plastic block. Which pair of statements corre52tt3 (xs:/snadeiax ctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through thnbr6;4 9f :yjmu wfl3ve point labeled B in the diagram shown. The ray reaches a flat6: nf fj3rvymb9u;w4 l 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 lwfuxu.i 0 e3g67x ueb/ight is incident on

  05.18: A student hold a hand mirror to observe the back of her head while//-ownlbz 8 xt90,cabb v(tpj standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the want /vox(wc90tl bzabb /8-pj,ll 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 thaht5x*d+3rq aut a light ray changes direction when it enters a new material. Which one of the following choices is the term t*+qdruax5h 3 best associated with this phenomenon?

  96.19: Light that has wavelength of 5o3itqf3 3e l.h00 nm in air has wavelength 400 nm in a transparenth3f.l3i3 ote q material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, botyh,f7 q ad3fx)l 8-ln8 .hnyieh its speed and its:

  00.01: As a wave moves from one medium to a secwrt*yme 6 0fp/x0a.3edhq *wb/l ggl,ond medium with a different index of refraction which of the following wavel* fy me hl 3pxqrb6,/d*/0awewt.gg0 properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency t unbb b5sk) e +:xk;*xskjn-b,ravels from air (with speed of bb5bkux- b)sx+j*;kk,n:nse 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 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits 6w0laazd rw7*f oi02va sound wave that travels tow0wawar 07zfd* l6io v2ard 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 wvbpvjgf,/s8)-:t ;)e gfbrm dhite light strikes a rectangular glass block with an ant:rm fv,vs jfd ) -g/;gb8p)begle 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 directed toward a point P on a boundary as shown todg ub- otaj+5323 wdhs the righga3 j+5 du23-bthos wdt. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what ha.ug.vp pl e:fd7 d9pb/ppens to a ray of light entering air from water? Air is at the top in all diagrambdg .f/:pvpe9ud. l7ps.

  94.11: The critical angle of a material is the angle of 5qmryzz5 op-o.x (c0 o; 59hldxgscs/incidence for which the angle of refractio.l s5 m9ohoz cy0qrp-( xgs;5cxdo/z5n is:

  95.12: The principle underlying fdgt*mri nst2q )8jq, )iber optics is:

  98.36: The critical angle in a transparenltrr)2 ay c82st 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 an41czcvi q1rtu/xf+g9;r lod+ index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, wha1tx f+cz giqordlv+ /rc; 4u91t is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glassd66y u:njc 4wnlb2o. r by observing the critical angle of the light in eau:dl64bc6 w.j2n yronch 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 iv)fld -(0gwtla2+(awd a d 4mclear material. When the light makes an angle of incidence equal to dlwad ((+4l02-advta g)wi fm$30.0^{\circ}$, 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 refractiontpo1:pn3 l ww h/8;xiv n. The laser beam emerges from the material and hits a tarl8vt: xow/ pni;31phw get. See the accompanying 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 medium 3 as mro 9ai+ap8yo 5r+q z,shown in the accompanying figure. What is true about theio9+5a+ yaq,8 zm rrpo respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shoq3 o*tf+p9 xyrezw :;uwn in the diagram. Wh3 tru ;q*w+pfzxy9e :oat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ra-c ydvr6 bt 9o25dhws9y takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of tho9 y-h tv wdd2bs659cre following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a t4.0gr -w aeb8 rh5dkvmonochromatic light ray traveling through three me . 0redb8-hka4rtgw 5vdia.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 traq )1.yoane p+qveling in glass ($n_g$=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 gu( meb iq)usigtz6fxk8w v8*2+ t( r1tlass at an angle + qtrikewmzsbu(1)tg*ux6v2 (t88 ifof $45^{\circ}$. 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 piece of glass.(qg h:r-k5k)wia 4/khps cp8x Which one of g( p/sh r:kphc4wa8k q5)k-ix 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-trianf,po2i t/3sgxged-4 dgular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by ai3eo dxsgi,/ -tf2g4p dr. Which one of the lettered rays shows the path of the light after it exits the glass?