HW11-phy2049-Spring-2012-solution

E equation 34 4 readily yields i pf p f 60

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Unformatted text preview: 49 Spring 2012 HW12 In the critical case, θ'comp must equal θc specified by Eq. 33- 47. Therefore, 2 ⎛1 ⎞ n2 = sin θ comp = 1 − sin 2 θ ′ = 1 − ⎜ sin θ ⎟ ′ n1 ⎝ n1 ⎠ 2 2 which leads to the result: sin θ = n1 − n2 . With n1 = 1.58 and n2 = 1.53, we obtain θ = sin −1 1.58 2 − 1.532 = 23.2°. ( ) 33- 68. (a) We use Eq. 33- 49: θ B = tan −1nw = tan −1 (1.33) = 53.1° . (b)...
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