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$m=\frac{f}{f+u}$
✓
Answer
Correct option: B.
$\mathrm{m}=\frac{\mathrm{f}}{\mathrm{f}-\mathrm{u}}$
$\mathrm{m}=\frac{\mathrm{f}}{\mathrm{f}-\mathrm{u}}$
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