Two plane miror AB and AC are inclined atan angle 0 20. A ray of light starting frompoint P is incident at point Qon the miror AB.then at R on the mirror AC and again on S onAB. Finally the ray ST goes parallel to themirror AC. The angle which the ray makes withthe normal at point Q on the mirror AB is(1 20 (2) 303 40(4 60

Two plane miror AB and AC are inclined atan angle 0 20. A ray of light

1.	Two plane miror AB and AC are inclined atan angle 0 20. A ray of light starting frompoint P is incident at point Qon the miror AB.then at R on the mirror AC and again on S onAB. Finally the ray ST goes parallel to themirror AC. The angle which the ray makes withthe normal at point Q on the mirror AB is(1 20 (2) 303 40(4 60
Answer» Two plane miror AB and AC are inclined atan angle 0 20. A ray of light starting frompoint P is incident at point Qon the miror AB.then at R on the mirror AC and again on S onAB. Finally the ray ST goes parallel to themirror AC. The angle which the ray makes withthe normal at point Q on the mirror AB is(1 20 (2) 303 40(4 60