Question

Two plane mirror M₁ & M₂ are placed at an angle of 120° shown in figure. A light ray is incident on M₁ at an angle of 60°; after reflection from M₁ the ray strikes M₂. The angle which the final reflected ray (after reflection from M₂) is making with the plane of mirror M₂ is ______.

Options

• 55°

• 65°

• 35°

• 45°

Answer 1

Two plane mirror M₁ & M₂ are placed at an angle of 120° shown in figure. A light ray is incident on M₁ at an angle of 60°; after reflection from M₁ the ray strikes M₂. The angle which the final reflected ray (after reflection from M₂) is making with the plane of mirror M₂ is 35°.

Explanation:

The situation is shown clearly in diagram