Question

Write the relation between angle of incidence , the angle of emergence (



e.The angle of prism (



a.And angle of deviation for rays undergoing minimum deviation? Using this relation obtain an rxpression for the refractive index of the naterial of th prism in terms of a and angle of minimum deviation .

Answer 1

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where is the refractive index at a wavelength , is the angle of minimum deviation, and is the internal angle of the prism. The angle of minimum deviation is attained when the angle of incidence and angle of emergence for a ray of light being refracted through a prism, are equal.

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