11.24: Two wave pulses travel to the riw:wc m:3z0y txght 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 zxw m w:c0ty:3centers of the individual pulses coincide?

  08.30: A light beam passes throutuz4:.scf4q8 y- kw jigh the air and strikes the surface of a plastic block. Which pai4tfwu.i yq8k :czjs4-r of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passeverupumpok /a).5v8-aj z2 8rs straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an an2 ev8k)p. 5m8r/-zj auuvr oapgle $\Theta$ 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 inci8 hav80 bt(adq cz i g(+-m+z-yc6hglzdent on

  05.18: A student hold a hand mir)o-w; ta).a gmut m;ghror to observe the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 f-a)g )tmuth;wao;m.g t 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 observezt9/ o01xvw pzd that a light ray changes direction when it enters a new material. Which one of the following choices is the term best associated withtv9 0p /z1xowz this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm int a (7bxi,d)ltvv m*e2 a transparent material. What is the index of refraction of the material?)vea 72( *tb,tidmxvl

  98.04: As sound travels from steel into air, botn ;o/m+3 wlesme. osq9fi h3 xt-jjc91jc+v b3h its speed and its:

  00.01: As a wave moves from one medium to a e l/g;a *3tv7i9epifl second medium with a different index of refractio*v7le9a/g i; il3peftn which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fro(gn7ep.uvpw ;;w uwezh sz,s ) w3p,o(m air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of .wo)ew(;p,(husn ;7uwzv esgppwz3,the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emits a soulbpjhg 0l34i7ot:bq6mr,(jend wave that travels toward the surface of the water. In the watem e,j p04( lroqj6gbi :bh37ltr, 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 sa 9g9d8b-j0eefvpt z( trikes a rectangular glass block with an angle of incidence oe9b( d09pja g 8e-fvztf $0^0$. 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 t0;n2d sis9ww hq y*5ye;(pi8-tobfpehe right. Which segment best represents the;t 0hs(db89i5eyns ofe2qp ;-ww *ypi refracted ray?

  98.17: Which diagram best represents what happensreaj4w(c :1omhg/ szb)- lru: to a ray of light entering air from water? Air ezbsur(l/wr c4-h mo)g:1j a: is at the top in all diagrams.

  94.11: The critical anwe60; klhr6/q2 wpnwhdhsjs zz 7m ,q-b2( 6tpgle of a material is the angle of incidence for which the angle of,dh(bt whe2j6 7wkm62s6 z 0r /p;hwqn-spqlz refraction is:

  95.12: The principle underlying fiber optics i2d ipv72pg dn1 oua p-zv-v()ps:

  98.36: The critical angle in a transparent subszg(4fut98o n1 yel0qv pm0 b:vtance 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 refracti3gi lv7syo3;2glwl at 5)dgr/on 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 speed of lg;) sloalgt g3v/ 57l23rdwyiight in material X?

  03.15: A jeweler can distinguish between a diamond and ..bjrlw h:og-a piece of glass by observing the critical angle of the light in e- .jr. :bwlgohach 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 the light makes an anhbjjsbz guw;7/ :ca+-gle of +j;jh bb ucs/w:g-z a7incidence 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 material of index of ru85xuoq8: m vsefraction n. The laser beam emerges from the mat:m5x8ouu 8 vqserial 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 passemikpg 9cg h*dc uka0,u.b,t(lg:01p gs from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true abol ui,0*.m(g cbgkhggpa1pktdu:c 9 , 0ut 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 shown bc9g2 io-f)pgws/qw 6 in the diagram. What may be concluded about the three indexes of refraction, nig6p29 w )obcgwf /q-s1, n2 and n3?

  97.24: The accompanying diagram showk2- wpj,da7l js the path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, 2klpjd,7-jw a n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the:ejhb/ixfws):+k y; v path taken by a monochromatic light ray traveling through tse:w kfi:;b)yh+vj/x hree 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 ligh0wgrem9;zj r m*g p nrrftb1/:wyc9*0bwg 2i *t traveling 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;db p bhk*rh+c7)mk)kiv q.y( incident on the surface of a rectangular block of glass at an angle +hbc)q). ;dm(k kkiv*rh py b7of $45^{\circ}$. 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 i6.t s 8l3c 0b6ebatzrhnto a piece of glass. Which one of the labeled arrows best indicates the path0a .rlc6bbsh6 tetz8 3 of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triaagxdyd7hf9zs+s x 3i u/zijq a-x,415 ngular glass as shown. The glass has an indeza13h7z q 5f usjsiy +a,xg-9d4id/xxx of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?