11.24: Two wave pulses travel to the right toward a rigid bounda2ad).w i.ay lvry as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of 2va w.ldi.a y)the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam pasp:o( yx2-d lfkses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes :op-l( y kfxd2for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in tyt 9 1sx a,4(c3vp*dty tqsu+yhe diagram shown.y d +st4t9t1 scqy,uvpx3 *(ay 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 is incidec9 so(o r9y0:m-jsl euo:rf1nnt on

  05.18: A student hold a hand mirror to obcr- )p a;1z,- rc8ba3 qrl9g3rbzmwxuserve the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front 3-au aq z-m3; bzr9,r)xrgr 8cp1wclb 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 changkiidmr *8;wnszzko 8// );igzes direction when it enters a new material. Which one of the following cho dsr;no; /)8izkkigim z*/z8w ices is the term best associated with this phenomenon?

  96.19: Light that has wave5;*gg(1wizx: mnv pfw length of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of thmv51: zx*gnp gfw;(wi e material?

  98.04: As sound travels from steel into air, both its speed andqnxtu79a tz/b 24yo /xkguw;* its:

  00.01: As a wave moves from one medium to a second medi;-jjj8xu r/i t2s i-fd9 uhqv(um with a different index of refraction which of the following wave properties /j89-fiijjsh2 xutuq;d v(r - would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travelsw,s- mquxel 1(zj6)af from air (with speed of sound ulawjqs f6e 1 m-)x,z(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 swimming pool emits+pkv3w w09buau m+f 5u a sound wave that travels toward the surface of the water. In the water, the swv +kw 0a +mf3u59puubound 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 strike; *h ml( rl/k0jmu(:gaz(op(x: dqjlts a rectangular glass block with an angle of incidence ofhu l;gtm*x0/ od(j (rl:qm :(jkz(lap $0^0$. 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 boudk;, e9cdm b2gndary as shown to the right. Which segment best represents the refracted ray?mcdg;9k2 dbe,

  98.17: Which diagram best represents what happens to a ray of light enar twojr; 7 o/f765ohxtering air from water? Air is at the top in all ;x5woo j at hr7f/76ordiagrams.

  94.11: The critical angle of a mq, d8rc++sysd/s de:h aterial is the angle of incidence for which the angle of refraction ,8 hyr:d+qces sd+s /dis:

  95.12: The principle underlying fiber optics iir2 pex3xzrax: rh75/ji2e t 3s:

  98.36: The critical angle in a transparent substance su:ss uvr+rk z.9rrounded 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 indeg5jp d-s*pt,4m ad8m nx of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the s djp g-*patm85m4 sd,npeed of 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 o7k23tizec f cg (isy+.f glass by observing the critical anczi.7 yeiks+2ctgf3( gle 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 intoodeg2x0gmo.*4s p l4 t a clear material. When the light makes an angle o4 t om4 l2go0sg*p.dexf incidence 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 mb-1xc*v y9kaal e -n3daterial of index of refraction n. The laser beam emerges from the materialaa -leck x9ny db1-3*v and hits a target. See 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 rqw uo)6 9xvv 1g,zb7emedium 1 to medium 2 to medium 3 as shown in th9wgzv u,1e6x)b 7q orve accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as*c q.ca)m 6fad shown in the diagram. What may be.6aa)fc*d cqm concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the .n. o 98azit1dmdr/ rcpath 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, respectively. Whitdrcm89d.z1 o. ri/a nch of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ray travek3, kv6biv )m*zjy4dq ling through three mk v,z3 mby*kid)v q46jedia.The 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 +b 5uqlmf:zgg1w: 2tjglass ($n_g$=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 st cf0/p* :-0w dsitbtsurface of a rectangular block of glass at an angwfi/p b -s tdt0:t0sc*le 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 wavel6haf3t9p0tx vength 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 glas03ta6fx9p h vts?

  14.44: A ray of monow)7 r o:vzsqk.*iykn/chromatic light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which o7ov zs/wyin)k qk*. r:ne of the lettered rays shows the path of the light after it exits the glass?