Question

If the incident ray is rotated by an angle of ${30}^{\circ }$ while the plane mirror is at rest, the reflected ray gets rotated by .

• A. ${30}^{\circ }$
• B. ${90}^{\circ }$
• C. $0^{\circ }$
• D. ${60}^{\circ }$

Answer 1

The correct option is A ${30}^{\circ }$

When the mirror is at rest, if the incident ray is rotated by an angle $\theta$, reflected ray also rotates by an angle $\theta$.