1.

A beam of monochromatic light is incident at i=50° on one face of an equilateral prism, the angle of emergence is 40°, then the angle of minimum deviation is : (A) 30° (B) <30° (C) ≤30° (D)≥30°

Answer»

A beam of monochromatic light is incident at i=50° on one face of an equilateral prism, the angle of emergence is 40°, then the angle of minimum deviation is :

(A) 30° (B) <30° (C) ≤30° (D)≥30°



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