11.24: Two wave pulses travel to the right toward a rigi quw2*6xqy 4 f7dapbv5d 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 centers of thw45 q6a7 d uvxpf2by*qe individual pulses coincide?

  08.30: A light beam pvelzv* x oqz4 +in+v)7fj 6z(hasses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes t) hq*zlzov+ (vj7nefz64x+vihe phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward:*./e*lby qmrdikoo ; through the point labeled B in the diagram shoo/d;y: eor mibk**ql .wn. 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 occurs whenever light o nti)1tb;t3jblhrh;srcb4d -/ o:g7 is incident on

  05.18: A student hold a hand mirror to observe the back of fd2;p ykf /m b*t+*sumj7avi2x0d( rrher 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 1t+2*s 70fkvdmi/mr f y xpd2(*ab ;ruj 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 htc6 l x29 l3 hnxnk,puzuz1e44qn43aray changes direction when it enters a new material. Which one of the following choices is the pz2u9 4an 3qtec36l kul44xhx,1nzn h term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air h n)3ysj+eru: uas wavelength 400 nm in a transpay3njrs: +) uuerent material. What is the index of refraction of the material?

  98.04: As sound travels from steel iu8yti1 oh : (vqe0dk;lr*o,mynto air, both its speed and its:

  00.01: As a wave moves from one medium tob ;jy(u4 v2sr hhk+pc7 a second medium with a different index of rephyb2rsu( hk7j 4+v c;fraction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency trav dqn/c 5bl2dep :kj07hels from 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 frequ0k5p7clddbq n j:h2e/ency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poov *uy-8ox,ilol emits a sound wave that travels toward the surface of t8 ,y v-ouil*oxhe 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 rectangular glass block wit** umum f8b*tu4uj99d d icrt.h an angle of incidence of jud*tdb9 8ru.t* *fu umci4m9$0^0$. 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 boundaro za-r (-p+jdiy as shown to the right.-p aojdri (+z- Which segment best represents the refracted ray?

  98.17: Which diagram best kpgcetb2zjc+1p7 9xw0a0q2f*+hj 6b y sjf4qrepresents what happens to a ray of light entering air from wate*j+xz c7 k6jh tsw 0fp 2q2fbcg+jq9ba014eypr? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of +--) 8yzgt1fxo ngntvincidence for which the angle ofgvgot+t8 fynz1-n x- ) refraction is:

  95.12: The principle underlying fitybo/5p.pi(9f bzd q4 ber optics is:

  98.36: The critical angle in a transparent substance s . 6+rb5mc+* xrmv63b iqpspq y:qd2wzurrounded 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 refraction of n = 1 g v/l:ben-h37res;hf.5 to material Y with an index of refraction of n = 2.0. If the speed ohs:-gl eb;7nfrh /e3vf light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distingun*wvwm;:g0v)d p:a rzish between 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 critical an:;*m rn0gdw zawpv ):vgle 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 mat 5s+vhqzbg mhs;4p8x p*2u5zkes an angle of incidgth+4zmp sx;q h 52v8b5zsup*ence 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 matejmed8+-e ye1wsw 6u2 oivy; 5hrial of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanyyw2j1vi-e8ye;uew 6+do h5ms ing figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1gob,i5mk 2z 6i to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refri52g,om6 z bikaction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to me)o2 0bfh8aaa4 gyz1 godium 2 to medium 3 as shown in the diagram. What a 0gahgyo4ba )zf2 o81 may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows t hs0,ir( v9eilhe path that a light ray takes passing through three transparent materials. The indices (rsl09ev i i,hof 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 tsv a otr8prh(2gw3p q0 2(gpfh y4*l*nhe path taken by a monochromatic light ray traveling through three media.The symbols2 2vp3oq0 wr lsp*t* n4(arfy8 hh(gpg $v_1$,$\lambda_1$ , 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 tracaeixiw;+1h 0t0sw2j1 n+c b dveling 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 t5fx1w4lbew: wu e 86ruhe surface of a rectangular block of glass rf1xu4w5 eel6 uw w8b: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 wavele /gdvtz59bb allvh*2p2zw1f8 ngth 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best2a* dz1l/hf b5p wb92vtv 8glz indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular 4ezp+yo hz +p02j 6nwgat fqv*ee *e74glass 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 iov*02j4hp*e gazyeetp47 +f wqn e6+ zt exits the glass?