Mathematics · 2022
JEE Main · 25 June 2022, Shift 2 · Q11
Water is being filled at the rate of 1 cm^3 / sec in a right circular conical vessel (vertex downwards) of height 35 cm and diameter 14 cm. When the…
Water is being filled at the rate of $\displaystyle 1 \mathrm{~cm}^3 / \mathrm{sec}$ in a right circular conical vessel (vertex downwards) of height $\displaystyle 35$ cm and diameter $\displaystyle 14$ cm . When the height of the water level is $\displaystyle 10$ cm , the rate (in $\displaystyle \mathrm{cm}^2 / \mathrm{sec}$ ) at which the wet conical surface area of the vessel increases is
Official answer
(3)
$\displaystyle \frac{\sqrt{26}}{5}$
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.