11.24: Two wave pulsw 3)ejg9,a 4e-gvgq2x5h danres travel to the right toward a rigid boundary as shown. After reflection of the triangulagqjdh),eax wv- e24agn9gr 53 r pulse, the pulses 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 surface of apdfk-9t ) vho9lf/,qhd+:szo plastic block. Which pair of statements correctly describes the phase f dpo-qtd9l)9 oh,f:zvhsk/+changes for the reflected wave and the transmitted wave?

  12.02: A ray of light pass 54r,qvqahs 3bes straight downward through the point labeled B in the diagram shown. The ray reasrq 4a q,3v5bhches 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 is incidenpo7.cnsq. a 4nt on

  05.18: A student hold a hand mirror to observe the back of her head whw qdnfhb 6+*w9ile standing in front of and looking dwq+6f9 nh*bwinto 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 her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction whunq 522n71(e8jrg2mytxcr r ven it enters a new material. Which one of the following choices 5je qrm 22vxu g(rynn28trc71is the term best associated with this phenomenon?

  96.19: Light that has wavelength o v.m9kn9+wk2h m k 2*vfkn; g6lt)tmoef 500 nm in air has wavelength 400 nm in a transparent material. What is thk;n.2vm tm2wkloe ftv *9+h )nkm69kge index of refraction of the material?

  98.04: As sound travels from steel into air, both du7,4r 2ao ynkits speed and its:

  00.01: As a wave moves from one hve a5 bi+cna/r);ro qp e10e *+h4yjomedium to a second medium with a different index of refraction which of theah+e bj +ih pr5req40)a/eon v;o*1cy following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequenrny r sg- .r(st- 0wmfxef:j:)cy travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true abouf ws nse:tyf(r0 ).gj rx--m:rt the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom) 28ye-vfd1awhm zo rt4 5gfbm* 8jm0t of a swimming pool emits a sound wave that travels toward the surface of the water. In the wat0tgjty1r v*mz2fd-bow854eafm m h) 8er, 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 rec w) bkz9y;0.vmel (phctangular glass block with an angle ofhp(ylb0 ze c; kvmw9). 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 pomf/ljhqfp*o44td 06 eint P on a boundary as shown to the right. Which segment best represents the 4 f04m ot*h/djqepl6frefracted ray?

  98.17: Which diagram best represents what happens-vcr-leis jp g9k/3r)g /4kfb to a ray of light entering air from water? A cgsf3rp9 ivbkk-)ge4/l r-j/ir is at the top in all diagrams.

  94.11: The critical ai(0jmj r9e 5jyngle of a material is the angle of incidence for which the angle of refractio emj(5r 0ijyj9n is:

  95.12: The principle u39ml -tk2+x/x tt3wtw)plfuu p-ee o(nderlying fiber optics is:

  98.36: The critical angle in p(6n,vf8ws w pa transparent 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 refraction of n = 1 i(uck 9m1r czmggk/0/.5 to material Y with an index of refraction o/mk/1izkgu0m gc( 9cr f n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler canl b7rto 3,x *jietit0; distinguish between a diamond and a piece of glass by observing the crie ttl,3i*b0xr ijt;7otical 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 th 6ujjb+uysyy2p1pf-qdx b, 8 1e light makes an angle of incidence equapy86 qbyy1, f1- jujus+2pdxbl 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 indes2u-.u j6 j 0po.fuuqvx of refraction n. The laser beam emerges from the material and hits a target. Seesj.uf0 -u6puuq2 .ovj 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 9ti3f;5-mil isq h36lhz)eo j qc;vf6medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2;f6j o93 s3 q)iihelct;hvmqif 5-lz6 , and n3)?

  00.14: A beam of light passesbczvz/ m vc5 6,(ypv1s from medium 1 to medium 2 to medium 3 as shown in the diagram. Wha/cs65(, zy vpbzcv1mvt may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passib n im;kp.y-lsw t0cmq( -6e.xng through three transparent materials. Thqn6-s.tck-;my(pibm lewx. 0 e 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 monoc i7m;fz61fq:mv 3cwk 2)1jzle qjyt2 nhromatic light ray traveling through three media.f 2wqtemnjqv;1yf1zml)3kj 62 : z ic7The 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 insja-n l;vmu,cj vnju 9(/6)mp5d1oqu 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 ligh3m jnwnqv ho+sw52 s09t is incident on the surface of a rectangular block of glass at anj92q+wnm wosshn5v3 0 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 g )7ky;zdye, ictl 96ha+ -xtaklass. Which one of the labeled arrows best indicates the path of the light ray aft k76cxdz9;)yaatt h-+l kyi,eer it enters the glass?

  14.44: A ray of monochromat qi,0asgc 63xz q16gumic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded 66giq gaq s3x1m0uzc, by air. Which one of the lettered rays shows the path of the light after it exits the glass?