A person of height 1.6 m is walking away... | Applications of Derivatives | JEE Advance

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A person of height 1.6 m is walking away from a lamp post of height 4 m along a straight path on the flat ground. The lamp post and the person are always perpendicular to the ground. If the speed of the person is $60 \mathrm{~cm} \mathrm{~s}^{-1}$, the speed of the tip of the person's shadow on the ground with respect to the person is $\_\_\_\_$ $\mathrm{cm} \mathrm{s}^{-1}$.

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