A certain prism is found to produce a minimum deviation of 38° . It produces a deviation of 44° when the angle of incidence is

A certain prism is found to produce a minimum deviation of 38° . It produces a deviation of 44° when the angle of incidence is either 42° or 62° . What is the angle of incidence when it is undergoing a minimum deviation?

(A) 45°

(B) 49°

(D) 55°

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A certain prism is found to produce a minimum deviation of 38° . It produces a deviation of 44° when the angle of incidence is either 42° or 62° .

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