11.24: Two wave pulses travel to the rijt .r:je8i* w;sky1cight toward a rigid boundary as shown. After reflection of the triangular pulse, 8ky*; escjrit: wji. 1the 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 strif+ jj9-8vz4ku a .h1vq55n1yfmz bq rakes the surface of a plastic block. Which pair of stateme9 5rh z5m.n8z4vb jqj1vff ya-1kqau +nts correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light paj8x )0pln 0lcjv6d q.cv tm76tsses straight downward through the point labeled B in tc7jtx8. dtv0n 6v lqpl0 jmc)6he diagram 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 whenever4kau4 :itjf+hvif. ll. ds25w light is incident on

  05.18: A student hold a hand mirror to observe the back of her heai u,mev;7tl6bg e cetcp1;) 4vd while standing in front of and looking into a wall mirror. If she is standing 4vceee6g v )lbtt4i7u1,; cmp; 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 direction whenp4p uj) 11d(ckhx s1k)jrll(q it enters a new material. Which one of the following1kjxqpl p)(s( d ju)lh4k11cr choices is the term best associated with this phenomenon?

  96.19: Light that has wa11h5rrg p d(edu15h*3 ufqwb yvelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of* 5gp5 q3rude1b1 hfru(hwdy1 the material?

  98.04: As sound travels from steel into air, both its speeno2tniovex)5 s ,g e(93lv.sawfno8 0d and its:

  00.01: As a wave moves from one medium to a second meqwdb8x 38/ ecadium with a different index of refraction which of the following wave pro8qc w8/ xd3baeperties would NEVER change?

  05.47: A sound wave generated from a tuniny 5qtq9 h+kd,zebcwll(:i+)bg fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed ofz++iq(e lh k)b9lby5q c,dt:w 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 - ph 5ocf;e4ye)4bfknyy+x xo3a/4en swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wakh4efxoyo /f)b an 4ne45cpxe-;3y+y ve 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 strikes a re5ygq 6y0snv/mctangular glass block with an angle oy 0g/qysn56mvf 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 onxbxf*uky-et r b0 :.n- a boundary as shown to the right. Which segment best represents thekyrxu0f.n b:*txe- -b refracted ray?

  98.17: Which diagram best represents what happens to a ray of light o)fd1 lc8suvw 59 *6/rgxm tazentering air from water? Air is at the top in all dw8to 5 c/6mx9 vafs1r)z dg*luiagrams.

  94.11: The critical angle of a material is the angle of incidb(ms 01.iww 7h.5 majmi6aukxence for which the angle of refra07wmimxum.5j bi hwa6 as(.k1 ction is:

  95.12: The principle underlying fibcsvj*g45l ,h4j 95 am lqg)sp;ox7xrz er optics is:

  98.36: The critical angle in a transparent pk.e)q 2/a77hl rue:vpmea 8 grne0w* 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 Xte qu jcpw):*tkh:w 03 with an index of refraction of n = 1.5 to material Y with an index wj:c tp: hkt 3)*0qwueof refraction of 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 distine:5xrs8nv0qx)ba7 om guish between a diamond and a piece of glass by observing the critisv)q:mbeo0ra7 x5 xn8 cal angle 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 into a clear material. When the light makes an anifvyzj5 au2;,d)e mo6gle of injza m),o;ivye2d fu56cidence 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 n. msmn2wv, q/a5 The laser beam emerges from the material and hits a target. See tqvmw s5n2, am/he 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 ody9 cg m/4 3*wu /kyboi13nywto medium 3 as shown in the accompanying figure. What is true about the respective indicc*1kd4owwmy 3 b yuy3in9/go/es of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 g0g)ky ;iu3 )hw:z0/hlhzr aato medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1,3:yhz; )hzwu)0gkai/g la0rh n2 and n3?

  97.24: The accompanying diagram shows the path tha1 f -+ h:x1mmhms(xcdkfy2vn ;t 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. Which of the following best describes the relah2ydvf:f 1 m-nmc x 1sxmk;(+htion between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ray tra8bj4sj3f*/qjnoz nn+w4rea 7 veli zae4n *7oqsnj483/wr fbn+j jng 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 lig+; tjdmt p46dqiy)c1 mht 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 incident on the surfac4 h17 /arhyejmb3la 6xe of a rectangular block of glass at an aa6 hjrxhemy1a4/l3 b 7ngle 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 gla2fv29i2 nmqk a*qoj : /e ekghk(5tiq*ss. Which one of the labeled arrows best indicates the path of the like/52iih 9* gjnvka fko2qtqqe(* :m2ght ray after it enters the glass?

  14.44: A ray of monochromatic lige 91el5yiv.wfxg imtp( (/e4fht enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the letteredeiief 91( mt 5e f/.px(vg4ylw rays shows the path of the light after it exits the glass?