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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° . What is the angle of incidence when it is undergoing a minimum deviation? 

(A) 45° 

(B) 49° 

(C) 40° 

(D) 55°

1 Answer

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Best answer

The correct option is (B) 49°.


At min deviation

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