A light ray incident on a prism is refracted at the rst
Chapter 22, Problem 22.59(choose chapter or problem)
A light ray incident on a prism is refracted at the rst surface, as shown in Figure P22.59. Let represent the apex angle of the prism and n its index of refraction. Find, in terms of n and , the smallest allowed value of the angle of incidence at the rst surface for which the refracted ray will not undergo total internal reection at the second surface.
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