Question

If the incident ray is stationary, but the plane mirror rotates by an angle of ${30}^{\circ }$, then the reflected ray gets rotated by .

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

Answer 1

The correct option is A ${60}^{\circ }$

If the incident ray is stationary, then if the plane mirror rotates by an angle of ${\theta }^{\circ }$, the reflected ray rotates by $2{\theta }^{\circ }$.