Question

When a mirror is rotated through an angle $\theta$. The reflected ray from it turns through an angle of

• A. $\theta$
• B. $\frac{\theta }{2}$
• C. $2\theta$
• D. $0$

Answer 1

The correct option is C $2\theta$

If a mirror is rotated through an angle $\theta$, if the incident ray is kept same, then the reflected ray will turns through an angle of $2\theta$.