Q. 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 the angle of incidence

B) the angle of emergence is equal to the angle of incidence

C) the sum of the angle of incidence and the angle of emergence is equal to 90 degrees

D) the angle of emergence is smaller than the angle of incidence

✔ Correct Answer: the angle of emergence is equal to the angle of incidence

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