11.24: Two wave pulses travel to the right toward a rigid boundary as show;+dup 74w khynb( /udin. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superpositionbd/nyw+kp (uuh ;47id of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a ar59 aw ;t*rjvi+y4gxplastic block. Which pair of statements correctly describes t rtj+w*ya;4vagrx59 i he phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thftj 7g/x-eb7d rough the point labeled B in the diagrabdgjx-fe7 / t7m shown. The 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 reflection occu1 oas-lkk4qbc4,g)tn isq ,sr jr*3 q3rs whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of hc queb97fi 6tg;o h+p8(aoo/ier 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 fb;h +oi 7(896ao uoepgq/ciftt 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 changeiujhl-qg (c xf5j(p43ob9ygz -11z uu5sjpj .s direction when it enters a new material. Which one of the following choices is the term best associated with this phenomenon uj o4-b5iq-f 3ugpg9hj( 5(x.zs1 cyjzpul1j?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in ad 77ls8 lcrirz-(z31 qd5fx wy transparent materialq7 f71z y lw8(3dxrirs5-zcld . What is the index of refraction of the material?

  98.04: As sound travels from steel into air, bothn 2zc pouy/fo4;-rf- t its speed and its:

  00.01: As a wave moves from one medium to a second medium with6 7vla m-tq4pz a different index of refraction which of the following wave properties wopa4qvmz6l7 t -uld NEVER change?

  05.47: A sound wave generated from a tuno-;9ta r*i xnh fpbk58ing fork of single frequency travels fromi fx8-;rokb n* 5ht9pa 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 it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimhz c3 g 8rbxu+qh9pm-p)4+qqpming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a frequencyqgu39p84 q -pr +q)+xhhpbczm $f_{water}$, 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 whitehoi)-fboz 3 0zelt* :v light strikes a rectangular glass block with an angle of incidence )oltz0bvfi: ez-o*3h 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 shovt 9y djos/ mb6h4y7, ;je;fjewn to the right. Which segment best j ,myevh jobd/;ty sfj496;e 7represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray5lz: jxk:ihr7ab5 q kx,+ko-g of light entering air from water? Air is at the top in all 5rg k i-xx:l j,q57+kkzhoa:bdiagrams.

  94.11: The critical angle of a materiv8s*wehx5 g. 9+hoczbal is the angle of incidence for which the angleo8.+* 95gwh vcexb zhs of refraction is:

  95.12: The principle underlying f+/,oc i2hdpw k e. oiq3w 6:t9oj:cgegiber optics is:

  98.36: The critical angle in a tra dl4)h9nywa b3nsparent 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 i j*/typy9+n psj3yj5x af m:0pndex of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed offjjjta pn5y*ys ppy+ 9 0/3mx: light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by m4c,qe2+x ckkl,wmtsq* k8+mg3m tv ; observing the cr4k,c;ck,m 8 m ke mtlwsx*t+mg+qq32vitical 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 ligh7 ;wnbu,xdi3g2 ct g7xt makes an angle of inciden,3gx;c tix7n 2wub7dgce 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 refrac0.n io;w xetcf ft2n**tion n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters o;e o*cwtf 0ixn2*nt. ff the laser and target. The value of n is:

  95.31: A beam of light paqos /a8.hg3s 20kzww+xe kmy 1sses from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refr0+ma 2kw3se1wsy o8h./zg kq xaction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to m nljsq64 z- nm82ktm8yedium 2 to medium 3 as shown in the diagram. Whatsqkmnyt j4 z-l88nm2 6 may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the uk,q/m2i+uq4y pv ey:path that a light ray takes passing through three transparent materials.emiq+/ y2yq,k:p4uu v 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 deoprbyb-b: 5)k.h/5l+dxd nmonochromatic light ray traveling through three media.The symblx-o ypd5 +rh:bbn5/)d k.be dols $v_1$,$\lambda_1$ , 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 trs197+ql gi il d v8mlsaez7ya143/lk7j ltxx0aveling 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 inci9n/vxg1 go1)n 5rdbk gdent on the surface of a rectangular block of glass at an angle of vo5ggb1nx9/) drk1gn$45^{\circ}$. 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 ho2e6ky*a m7 cfrom air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters tma7e 2ky ch6o*he glass?

  14.44: A ray of monochromatic light enters the n48 6uk)tu/qck c/ dziright-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 after it exits dn u4kz6t8cq//kiu)cthe glass?