ch33-p053 - 53. (a) Approximating n = 1 for air, we have n1...

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53. (a) Approximating n = 1 for air, we have 11 5 5 sin (1)sin 56.9 n θ θθ = ⇒° = and with the more accurate value for n air in Table 33-1, we obtain 56.8°. (b) Eq. 33-44 leads to
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