11.24: Two wave pulses travel to the right toward a riq0q3v02a,uz c 0q nxahgid boundary as shown. After reflection of the triangular pulse, tcnqvqza30,u q 20 0axhhe 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 throug uqwteaozxbluykg,,6k *n03 /)w y92xh the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflectn )k 3ewl0wbg9 xqou,kza6 y*/,x2uyted wave and the transmitted wave?

  12.02: A ray of light passes straight downward through them55 ;5ardrvrazyk4+s u7x4he point labeled B in the diaruy+5xe4kd5 zvsa;r ra4mh 75gram shown. 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 whenes fe p+p*t:q/eobf2) bver light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whi upb)m,kb: ilttxpi,f- n r +d;l/c,kd5;x1lmle 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 the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirrmcndl,dpb1t : ) m;+l i-kxf5u lpk,,xti ;/bror?

  14.25: It is observed th30tle(i 62c* azlohy pat a light ray changes direction when it enters a new material. Which one of the following choices is the terp2ti 0hl*aole (6zcy3 m best associated with this phenomenon?

  96.19: Light that has wavelengthw;hah7p/ k4 knq-rm )c of 500 nm in air has wavelength 400 nm in a transparent material. What is the index hw mc7/ hkn-p)r4 ;kqaof refraction of the material?

  98.04: As sound trave )cfv+mckf:oqvo6k57efq8 q6 ls from steel into air, both its speed and its:

  00.01: As a wave moves from one 3r,ytq6 vgd5fhenqy)(0lwo+m p1 5 ptmedium to a second medium with a different index of refraction which oeh6n0 vpwm5dty(p3qg+ 5lf,yr o 1qt)f the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of singlellwl 94z g36aw;7 o;; okhftre frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is tr az;et;lw7gr9lokf h643;o lwue about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at5u hntk5 z1.q0dvb+ ye the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave ha5+u hnevbzt 5.01kdq ys 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 strikes a rectangular glass block with ,s0 kb7v.t nuean angle of incidenntb0.7s e u,vkce 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 boundarq(p la2 :saav6/ks49 mmvmr8xy as shown to the r8lrs6:k xaav2v (mq9sp /4mamight. Which segment best represents the refracted ray?

  98.17: Which diagram best ofbiz:+jk1gd; )i 7o:9y 96rslcvuzs represents what happens to a ray of light entering air from water? Ai z r:9zsclbj+ s1:u7giod)oy; i69kfvr is at the top in all diagrams.

  94.11: The critical 6ost6/b+aqq5 u fv1gbangle of a material is the angle of incidence for which the angle of refraction is:go/qtv6buqs5 +b f1a6

  95.12: The principle underlycip ;/edyv3c018 *lw7wz+ kx wim o+kying fiber optics is:

  98.36: The critical angle inoe 109 )ncty uf9 i:cxwk/ (uzdx6yqx) 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 w s4uivl z9ft8a,b +3lvith an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light3flbz 9 u48ivas+,vlt in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish betwee+y h za zih,bmv:yd1 69tzk2(an a diamond and a piece of glass by observing the critical angle of the light ih2 hy9,6v da zz:1+b(mizakytn 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 fromza n:dtcduqnz+6apq7: o;g8g/2hgv . air into a clear material. When the light makes an angle of icdu: zhdtazo/g2nvaq+p .:7qgn8;6g ncidence 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 refraction;yn4d5ccq.r x 6jkne w/3v4q pv*hem8 n. The laser beam emerges from th8kn4 jy; mdqrwn5qhev c6v43xp *c. /ee material 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 medium 2 to medium 3 as shoqnhu f3nfk/-le3y-b 9wn in the accompanying figure. What is true an k 3f -fh39ny-bqu/elbout the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from mo(ef t1/zkqd +it5 ut)edium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the threud t)kt(qf1ezi/o5+te indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing jqwu 9jse 8,z1through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the fo 18weu sz,qjj9llowing best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ray trav: jxv6yyx81 p b8qan*celing through three mediab8yn16*yx :8 xpq avjc.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 glas fp9rwr9h :u.tezjkn2 c8 .*tos ($n_g$=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 incip-k+1 (bo8 nqqj lk 4mqs;ixv4dent on the surface of a rectangular block of glass at anq4 k8njm1kq( -q+ i4xo;pslvb 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 air into a piece of glass.t d+6:((8fbv rlx xtyvpiff.; Which one of the labeled arrows best indicates the path of the light ray after it entersfx8p ( +6y dvf xr(tv.tfbl;i: the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass amk7l.0; muvmgvst9( ts shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which 0v;u( vsm7 .m9tt lgmkone of the lettered rays shows the path of the light after it exits the glass?