11.24: Two wave pulses travel to the ri;ct lpcer8.) yght toward a rigid 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 the individual pulses coincide?l8e cr).yp ;ct

  08.30: A light beam passes through the air and strikesj6efxvp2 mhcn*t93 eoh(q2s9 the surface of a plastic 9* xsfhcp2(3to26mqv9en hejblock. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward thcuv 7mwgnuh :7r0ha;wx m)0d2 rough the point labeled B in the diagram shown. The ray reaches anrhu7;x ) 2:au 0mcwvw0gh 7dm 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 liz 6cb*za 4fd4ught is incident on

  05.18: A student hold a hand mirrodwfb4ehf . u(-d k.8yor 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 sheu . (d8defk y.-4wfobh 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 c8flkxeao,-jyfo 14 wcz:l4 q2 hanges direction when it enters a new material. Which one of the following choices is the term best associated with this 4 acw,4ek2o :1f8lq fzl j-xoyphenomenon?

  96.19: Light that has wavelength of 500 nm in air6*o2vji(h)(n4ek l x hes1agrxdi;wmo400 tp has wavelength 400 nm in a transparent maton* h1 ld(ah04x2(meoti v4 ek )giwrs;0p6j xerial. What is the index of refraction of the material?

  98.04: As sound travels from steel into auljxja,*8i bi+ 9 a2nyir, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with avd*. jlo9qo.i1 8fj9vb4ai;u e/paxq different index of refraction whiiv; .aoj 9j1dqu.xlpif98ovae/ *4 qbch of the following wave properties would NEVER change?

  05.47: A sound wave generatet y*t:4+svei va)(yh wd from a tuning fork of single frequency travels from air (with speed of sound 340 m/)+y hv(wt*as4e viyt: 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 placed15 ko6cnr4uk)6 fx) mv8cievd at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a fre6nki1xrv) e)u 46fvkc5c mod8quency $f_{water}$, 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 strikzaui ucryhgh+od)9 :9x ; 55hges a rectangular glass block with an angle of iro5 a9h)gih;dzg+95hcuy: x u ncidence 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 shck97k b)n -m/9vcas l.pxc2lwown to the right.m)2lac/b 9 l kc7 n-x9cvpk.sw Which segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering ar(m*ck.. c/ q tgp86tpr exep;ir from water? Air is at the top ince cxqk.t;r (pp*.g8/e p6rtm all diagrams.

  94.11: The critical angle of a material is the angle of incidence for whichm4wl8 8gt2mi ke)4p nv the angle4nkpt8 ) lve8g24immw of refraction is:

  95.12: The principle underlying fox5y jg0b :x.kpv) uw/iber optics is:

  98.36: The critical angle in a transparent substance surrou0wp3r m iml9h/nded 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 mad8 0z alzyw5g 9v.og3uterial X with an index of refraction of n = 1.5 to material Y with an index of refraction dzz8ao593uwlg . vy 0gof 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 can distinguish between a diamond and1m)w9ok d pppgz/f y ,/u-2zcd a piece of glass by observing the critical angle of the light in each material. Glk9wz2 z1dpgcdyp/-f uo/) mp,ass 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 makes an ang:zmk691mi/ g jtli(3v(kj n fh-rc;bele of incid6rj;(:e t jk1cbivimg/hn-l( kfmz3 9ence 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 ini,nf mily/* px3y. 5qx de,5oe ev4go3 a material of index of refraction n. The laser beam emerges from the materip ,i egyevlo*q4x5d.eo ,m3xi y5/ f3nal 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 medium 1 to 0nci yttm ;7mgyq 1ioqs-9;g 3medium 2 to medium 3 as shown in the accomp; 7 myq1cy;tg90gt -3qiinso manying 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 sho a; ngox5,qe lo*qi0ik,w-25r8x nkwbwn in the diagram. What may be concluded about the three indexes ofgx 0kar w; qo2e-,ol k,85iinxw*qnb5 refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the pa 6gu1ugb1q *h;nmo: kqth that a light ray takes passing through three transparent materials. The indices of refraction iq;: ukq1boguhmng* 16n 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 kdsr w/ rb,1fllln*i ( +/*m*kxt5it vt6s)ujthe path taken by a monochromatic light ray traveling through t1ux k jtkfi6l*r v (l s*+ /*5imdwt)/,rslbnthree 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 trtzip m+ tke+b o1+;/wyaveling 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 rectangular block ofb;z r1emd0u7np az;* g glass at an pz7z0 ;n;degbr a*mu1 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 acqrw9+:rt(* 7 inefmtngt 42w :t ujy/ir into a piece of glass.7y:u2ij+mnt e wwr: tt/r* n4tf cg(9q Which one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the rightim(v3. f f7x5p3k wkuu twsk;5-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lw f.i3ufk7wx p3u;k s5k v5t(mettered rays shows the path of the light after it exits the glass?