11.24: Two wave pulses travel to the righ6/vear7kkc c+du8-b pt toward a rigid boundary as shown. After reflection of the triangular pulse, the pu 7pk6 b uc+c/ekadr8-vlses will interfere. Which one of the following pictures 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 izy6k su93c,/ggqxwk )9i x*2boecv-surface of a plastic block. Which pair of st9,zui2/yekk -so9 *g3gcvi b6 x)wqcxatements 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 in tkp/ce+bkw ujb*j+h2+ he diagram shown. The ray reaches a flat mirror placed at an bj++cu ewh+p kk2 /*bjangle $\Theta$ 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 incident on/ a0+p,if0,hcs.pui)duu 8e8 gpcsqb

  05.18: A student hold a hand mirror to obseryb s:pc :9,* /lwnvomive the back of her head while standing in front of and looking into a wall mirror. If she is standinsp:moc9/ybw:n , *lvig 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 new ma zwwy e,vbl*v-x w,0h5terial. Which one of the following choices is the term best associated with thx5h,v-b,we z 0*vy wlwis phenomenon?

  96.19: Light that has wavelength ii cufu0:hdtda9uk7h6l 9,f 6of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the material?df:fauh dki09c,l6 7 6thiuu 9

  98.04: As sound travels from steel into air, boty9iffbvo;1e,yun/ bc 3/)t crh its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differe yyld hs.3se-e(knr ;:+ hdcw0nt index of refraction which of the following ewyl3;ds +:.e(r-nsyk 0dhhc wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequen ri)kq, egun qf,+z+1ncy travels from air (with speed ok1q,+q,f z+ nr)geiunf 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 a r *eslm6nbph;8,dcwo.5a0xat the bottom of a swimming pool emits a sound wave that travels e5aw.,n 8arx b 0pcohs6;ld*mtoward 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 strikes a recd*tb0 ;aokh9xtangular glass block with an angle o *d9htobak0; xf 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 bounda(ja07f swtm q+kkan ;-ry as shown to the right. Which segment best represents the refracted ray? +am- 7s0j akwnf; kq(t

  98.17: Which diagram best represents what happen+u9gm+ynfifolqz6 y t p +a(5*s to a ray of light entering air fm*zpi(nu9f fq ayl y++t+g 65orom water? Air is at the top in all diagrams.

  94.11: The critical angle of a matz3 r fhdg9i4ztyxlnrcap;(a ..7 o z-5zxx1h;erial is the angle of incidence for which the angle of refracti;- .lz3r paz9d.oi5txg7yr ch4 xzf x(zanh;1on is:

  95.12: The principle underlying fgqk8+ye eo )k.n2hck5kusjk 876 hi (ciber optics is:

  98.36: The critical angle in a transparent substance surrouwat f1z9 5ljy+nded 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 mater i ba,duoizr agwhb4;8tl.u.em)4+wy/r 3c/cial X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light cgwuhuiadm4o.)/+ta 4l;/b,y 83rw i. b ezcrin material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish beth, ;z .nwgdh8-iidtf8 .y8fcxween a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a cr,.ic-f; 8yfdw t nihxd.z8gh8itical 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 lm1o gzo0,zv.the light makes an angle of inl,m z.0zo1ov gcidence 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 refgy)v0(qgs bv6raction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. Theq(g g)v0sy6v b value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown * x zpotmo4j320.qtucin the accompanying figure. What is true about the respective indices of refraction (n1,2.t4j*3 mqopc o0 tzxu n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown i ,a tpfrr9f(ssy29glbumq/ 2+n the diagram. What may be concluded about the three indexes of refraction, n12rbfaymrsglt2,(f/9ps+ u9 q, n2 and n3?

  97.24: The accompany )pq4te+sc*xj ing diagram shows the path 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, respe+x es4p c)*qjtctively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the 07w3q uiq i cc*hkae(7wpj3e6path taken by a monochromatic light ray traveling through three media.The6ija e 73qccweu (k7w0q h*3ip 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 glassv kph l8*zx2k el71 itsx-i i)o.m:as: ($n_g$=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 sus.mu 086auy(a i1d fvurface of a rectangular block of glass at anu1sad0u( f a.m8yvi6 u 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 piece of glasstih: *po+ m1xr. Which one of the labeled arrows best indicates th1mpo+hxrit :* e path of the light ray after it enters the glass?

  14.44: A ray of monochxvv7b5i7eu eeq ki:dzv;6) ur (e4t8rromatic light enters the right-triangular glass as shown. The glass has an inde zvxdvqu7ktee;b uiie re r74)8(v6: 5x 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?