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10_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

10_Chapter 22 HomeworkCH22 Reflection and Refraction of Light

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242 CHAPTER 22 22.11 (a) 0 water water n λ λ = , so ( )( ) 0 1.333 438 nm 584 nm water water n λ λ = = = (b) 0 water water benzene benzene n n λ λ λ = = and 438 nm 1.12 390 nm benzene water water benzene n n λ λ = = = 22.12 (a) 0 436 nm 327 nm 1.333 water water n λ λ = = = (b) 0 436 nm 287 nm 1.52 glas crown glass n s λ λ = = = 22.13 From Snell’s law, ( ) 1 1 1 1 2 2 1.00 sin 40.0 sin sin sin 29.4 1.309 n n θ θ ° = = 1 40.0 = ° and from the law of reflection, φ θ = = ° Hence, the angle between the reflected and refracted rays is 2 180 180 29.4 40.0 111 α θ φ = ° − = ° − ° − ° = ° 22.14 Snell’s law may be written as: 1 2 1 1 2 2 sin sin c v n v n c v v 2 1 θ θ = = = Thus, 1 1 2 2 1 1 1 510 m s
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