Multiple Choice Question XXXXI — task. Science CBSE, Class 10.

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A short linear object of length \(b\) lies along the axis of a concave mirror of focal length \(f\) at a distance \(u\) from the pole of the mirror. The size of the image is approximately equal to:

\(b\left ( \frac{u-f}{f} \right )^{\frac{1}{2}}\)
\(b\left ( \frac{f}{u-f} \right )^2\)
\(b\left ( \frac{u-f}{f} \right )\)
\(b\left ( \frac{f}{u-f} \right )^{\frac{1}{2}}\)

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