Physics-
General
Easy
Question
Two plane mirror AB and AC are inclined at an angle 
= 20°. A ray of light starting from point P is incident at point Q on the mirror AB, then at R on mirror AC and again on S on AB finally the ray ST goes parallel to mirror Ac. The angle which the ray makes with the normal at point Q on mirror AB is
- 20°
- 30°
- 40°
- 60°
The correct answer is: 30°
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