11.24: Two wave pulses travel to the right toward a rigid tcs qbzj+vgzs 50emqx ra- +l6y14l 71boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of thebxqy1+a5t-mzsr07vj1+ lq z g6le s4c pulses when the centers of the individual pulses coincide?

  08.30: A light beam pass:it,rm c a.7:boga/x ges through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wai 7 ta a:xrg.cb:o,g/mve and the transmitted wave?

  12.02: A ray of light eo/u4 4w,k razr jzvnw3.j-o4.yrzi :passes straight downward through the point labeled B in the diagram shown. The ray reaches a flatr /oa:nr4 .,34ij ouezwky zrz-wj. v4 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 g e m4:uawun8olt11m 1is incident on

  05.18: A student hold a hand mid01;nbypa h ob-9g mq+rror to observe the back of her 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 t a phd9n0;myg b1+qo-bhe 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 n s7w4f58wk li:h2 q;5w4gy, qjevrhbu ew material. Which one of the following choicesf;y5blw ks v:h5r ew24h74wij8,qgqu is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 50mc l:v/ fic /dev)v.)e0 nm in air has wavelength 400 nm in a transparenvvd) lfe./ )e:i /ccmvt material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, b(ovegq3 4x d4 ++ijeyvoth its speed and its:

  00.01: As a wave moves i w3f+qarazr3+v(x3 fqurf4. from one medium to a second medium with a different index of refraction which of the following wave properties w3u(xzf+avi3 .fq+qw 3 r4ra rfould NEVER change?

  05.47: A sound wave generated from a tuning fork of single 8s9ttd(w;c1ft 8kg fk frequency travels from air (with speed of sound 340 t;w 8c9td fgtfk81 (ksm/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 swimmivo93ama n)o9v,pi/ emng pool emits a sound wave that travels toward the surface of the water. In the water,)p a vmm/i9noae39ov, 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 stri,hqh rvfi u9,,kes a rectangular glass block with an angle o,9 ,h qfuvir,hf 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 to 9uvp f (xd/dg(th((up vd dx/fg9e right. Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a rk-r+xlo*y qd,;n (oyoay of light entering air from wate*;oy- qd r,l(oykx o+nr? Air is at the top in all diagrams.

  94.11: The critical angle of a material ispez;z5 0c ,hdmi4 olwp xf,xe *l,.af) the angle of incidence for which the angoc* efahl)p5zwz;, 0m f id,x,l4epx. le of refraction is:

  95.12: The principle un6guwczw8wrf+ y qx*d9c*- q7aderlying fiber optics is:

  98.36: The critical angenw56pu un d 6eorz nb::s./:ple in a 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 materialik)6fc4jk) k1a fcj9i 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 in material Y i9)j fii1kj6 cc4fk)aks v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass 0vz. 8rt se/lplu- hp7ca+g 3kby observing the critical angle of the light in each material. Gl slczeupg/vrp0kta-.+h 873lass 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 int+bi 0iwqp ko* 6tssmi,,fsr.,o a clear material. When the light makes an angle of incidence equal to ,.sirmo q,*w ifb6p+s0ti,ks$30.0^{\circ}$, 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 l3+2 y fjj.q*p 4q levzzzpq,,yaser is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser 4q3l * ,z qvpf.zpjzy,jy +eq2and target. The value of n is:

  95.31: A beam of light passes from medium 1 to a v5s,: o-sconmedium 2 to medium 3 as shown in the accompanying figure. What is true about the re5- :osnc,v saospective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 top*gdr57fr) ab medium 3 as shown in the fg5r ar*7b)pd diagram. What 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 passi-n tu4q -pgw9eqdly4.5xcxyn/4m; k gng through three transparent materials. The indices of refrqt4nynu/d4py;g-xg -c 954ewl.kxq m action 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 showsc pn0wkt zd7;* )k1x5zav,v2 pisfy0q the path taken by a monochromatic light ray traveling through three media.The symbol;*wc pkqdz2y)iv5ftk p x1a 07,svzn0 s $v_1$,$\lambda_1$ , 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 traveli-z5wz qud*9 rmrb 9c5-xb8c sxng 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 dkc4 1i*:a jzarectangular block of glass at an angle o* ij1: aa4ckzdf $45^{\circ}$. 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 wavelengthr*742 ctyrvwsw s)9fc),u lb d 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the glass? ywr c4,w2srvfs* tb )7u) cdl9

  14.44: A ray of monochromatic light enters 0nsjqj e 2k92hthe right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded b kh 2njej02qs9y air. Which one of the lettered rays shows the path of the light after it exits the glass?