Question:medium

A man \(1.6\mathrm{m}\) high walks at the rate of \(30\mathrm{m/min}\) away from a lamp which is \(4\mathrm{m}\) above ground. How fast is the man's shadow lengthening?

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Use similar triangles to relate shadow length to distance from lamp.

Updated On: Apr 23, 2026

\(22\mathrm{m/min}\)
\(20\mathrm{m/min}\)
\(15\mathrm{m/min}\)
\(25\mathrm{m/min}\)

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The Correct Option is B

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