MCQ
The relation between the linear magnification $m,$ the object distance $u$ and the focal length $f$ is
- A$m=\frac{f-u}{f}$
- ✓$\mathrm{m}=\frac{\mathrm{f}}{\mathrm{f}-\mathrm{u}}$
- C$m=\frac{f+u}{f}$
- D$m=\frac{f}{f+u}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.