MCQ
If an observer is walking away from the plane mirror with $6 \mathrm{~m} / \mathrm{sec}$. Then the velocity of the image with respect to observer will be
- A$6 \mathrm{~m} / \mathrm{sec}$
- B$-6 m / \mathrm{sec}$
- ✓$12 \mathrm{~m} / \mathrm{sec}$
- D$3 \mathrm{~m} / \mathrm{sec}$