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MHT CET 2023 (12 May, Shift 2) · Terminal Velocity

Terminal Velocity question from MHT CET 2023 (12 May, Shift 2)

Q32MHT CET 2023 · 12 MAY · SHIFT 2Easy

Terminal Velocity

A spherical metal ball of radius ' $r$ ' falls through viscous liquid with velocity ' $\mathrm{V}$ '. Another metal ball of same material but of radius $\left(\frac{r}{3}\right)$ falls through same liquid, then its terminal velocity will be

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Answer: (d)

Terminal velocity $v \propto r^2$ for the same material and liquid.
$v' = V\left(\frac{1}{3}\right)^2 = \frac{V}{9}$
So the answer is (d) $\frac{V}{9}$ .

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