1.

Two plane mirrors AB and AC are inclined at an angle = 20°. Aray of light starting from point Pis incident at point Q on the mirrorAB, then at Ron mirror AC and again at Son AB finally the ray STgoes parallel to mirror AC. The angle which the ray makes withthe normal at point Q on mirror AB is(B) 300(D) 60°min(A) 200(C) 40°

Answer»

D) is the correct answer



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