When a Ray of light is refracted by a Prism such that the angle of deviation is minimum, then Physics - Questions and Answers

When a Ray of light is refracted by a Prism such that the angle of deviation is minimum, then

(a)The angle of emergence is greater than angle of incidence

(b)The angle of emergence is equal to angle of incidence Right sign

(c)The angle of emergence is smaller than angle of incidence

(d)The sum of angle of incidence and the angle of emergence is equal to 90 degree.

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