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WHomework set 15_solns_2011

WHomework set 15_solns_2011 - Homework set 15 Problems...

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Homework set # 15 Problems: 22.29, 34; 23.3, 4, 24, 20 Solutions: 22.29 When surrounded by air 2 1.00 n , the critical angle of a material is 1 1 2 1 1 sin sin c material n n n (a) For Zircon, 1.923 n , and 1 1 sin 31.3 1.923 c (b) For fluorite, 1.434 n , and 1 1 sin 44.2 1.434 c (c) For ice, 1.309 n , and 1 1 sin 49.8 1.309 c 22.34 The critical angle for this material in air is 1 1 1.00 sin sin 47.3 1.36 air c pipe n n Thus, 90.0 42.7 r c   and from Snell’s law, 1 1 sin 1.36 sin42.7 sin sin 67.2 1.00 pipe r i air n n 23.3 (1) The first image in the left-hand mirror is 5.00 ft behind the mirror, or 10.0 ft from the person
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