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Practicing Success
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A rod of infinite length is placed along the axis of a concave mirror of focal length f. The near end of the rod is at a distance u > f from the mirror. The length of it's image is |
$\frac{f^2}{u-f}$ $\frac{f^2}{u+f}$ $\frac{uf}{u+f}$ $\frac{uf}{u-f}$ |
$\frac{f^2}{u-f}$ |
The correct answer is Option (1) → $\frac{f^2}{u-f}$ |
