11.24: Two wave pulse v3 ny1b/ihv*ts travel to the right toward a rigid boundary as shown. After reflecth3*v/ ntiyv1bion 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 the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plasticp g31.4zpixk,-xi u ib block. Which pair of statements correctly describes the phase ibi,kgzxpp4x 1.3 -iu changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B igy6sscn *g7t7q (po9cn the diagram shown. The ray reaches a flat mirror placed at an anp*7s sg(ct 7qc oyg96ngle $\Theta$ 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 liz;+ y r *ipm gxcy7uq3m95fr/gght is incident on

  05.18: A student hold a hand mirror to observe the back of her hep zl;r-(uo b)e nhp)pt 38 8bqbjbbm..ad while standing in front of and )b)pp; h.8umqn .lpbzrj(-83ob tbeb looking into 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 direction4* d7 6bbdzqym when it enters a new material. Which oneq4d* ymb7 dzb6 of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelengt7( dfvj oz9p:l gr;h)ph 400 nm in a transparent material. v(zfj pg hd:)por97l; What is the index of refraction of the material?

  98.04: As sound travels from steel int e*,vtlv :,))zg: z tkiy95ljewg qx4no air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium -m0 xn ;(c4nat-lc0g2a2 t dwucqj-uowith a different index of refraction which of the following wave prc;l q 0 a-20mtn -uadnuwgx-cjtoc2(4operties would NEVER change?

  05.47: A sound wave generated from a tuning fork of sin.ywuqmf8 ;.yabjf+ 20i ni fa8gle frequency travels from air (with speed of sound 340 m/s) into ma82 yf.w;i. i8n0yaqfj ubf +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 swiq)b 3 a 5c.mjnpuo2j/cfh:e *bmming pool emits a sound wave that )* /u2a:hoj cjn.fpecbq35 mb travels toward the surface of the 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 sjx qi0rn z8 sl,j0d0;ptrikes a rectangular glass block with an angli00lx, jjsz rpnd q8;0e of 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 bf -t3w8iy.ba5jsi6 ,/kb puie3hpp. moundary as shown to the right. Which segment bestih8bk3 6 yjiste3 5a-p..w/fp,pmi bu represents the refracted ray?

  98.17: Which diagram7ti,g r( fc+,8beogjl best represents what happens to a ray of light entering air from watelb+ ,o(ctg i7f8,ejrgr? Air is at the top in all diagrams.

  94.11: The critical angle of a materiaf88cc pr ksn; 1*dhm t)u5fvh8l is the angle of incidence for which the mvdkpcu sh8 *8hn1tc f;rf85 )angle of refraction is:

  95.12: The principle una ;5a kbg9xfga:xa 76/csm.d uderlying fiber optics is:

  98.36: The critical angl; *jo2dsj6 phpe 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 material X with an index of refi:-qqb*i o*pob8qket )28 jag raction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speaq:o )iebjqp*ib k*2g8 oq -8ted of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piecei 3wpr-nhet3 -ka*;vr of glass by observing the critical angle of the light in each material. *w-r;thp3einv a3 rk-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 light mak7c *oa6lx:p4uj).wmuj; ps taes an angle oc .sa6 ux uj mo):;t*l7wapp4jf 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 l/jpa f*2o,4dda)kz8r 7u n vkyaser 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 and targf r8*kdy,zja7/np o24dvau k )et. The value of n is:

  95.31: A beam of light 6o, sbqk( mgo7k mld1/1odfo4passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true aboutg6ko,o d l 4(1soq/1bommd7fk the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to m8x7wamfeq p*,* * bjgnh.4ojjedium 2 to medium 3 as shown in the diagram. Whe.qwn* h*8g7p4x bj,a* jo mjfat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a ligh0 h8i1i-/ cavck lh b3cym96i*czgzb8 t ray takes passing through three transparent materials. 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 mg /8zbi*i 1a bc yhv98ckc30z-lic6hindices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light x/71shs qeiqggv. ;,po s99gxray traveps;x, xsi7hsoegvqgq/1g . 99ling through three media.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 gly/lwzrpox -6lp43n:c ass ($n_g$=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 rectanu5k4r9) 7zispffa1f agular block of glass ata u 5fkz4f9 )sp7afr1i 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 wavelength 600nm is transmj5- ra-9tk72 s :6qqdpzap umfitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters6a5 mtrqj pp:9us7-zk qa2-fd the glass?

  14.44: A ray of monochromatic light enters the right-tria75u7 f5v bzba:x0p5ntj u.;opz rt+0wkldz 0ingular 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. 0ui0lazztzbu 5f7+7r:j ;kv t5 on5w0dpbpx after it exits the glass?