Mathematics · 2019
JEE Main · 12 April 2019, Shift 1 · Q72
A 2 m ladder leans against a vertical wall. If the top of the ladder begins to slide down the wall at the rate 25 cm/ sec., then the rate (in…
A $\displaystyle 2$ m ladder leans against a vertical wall. If the top of the ladder begins to slide down the wall at the rate $\displaystyle 25$ cm/ sec., then the rate (in cm/sec.) at which the bottom of the ladder slides away from the wall on the horizontal ground when the top of the ladder is $\displaystyle 1$ m above the ground is :
Official answer
(2)
$\displaystyle \frac{25}{\sqrt{3}}$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.