Physics · 2023
JEE Main · 31 January 2023, Shift 1 · Q9
If 1000 droplets of water of surface tension 0.07 N / m, having same radius 1 mm each, combine to from a single drop. In the process the released…
If $\displaystyle 1000$ droplets of water of surface tension $\displaystyle 0.07 \mathrm{~N} / \mathrm{m}$, having same radius $\displaystyle 1$ mm each, combine to from a single drop. In the process the released surface energy is-
$$\left(\text { Take } \pi=\frac{22}{7}\right)
$$
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 7.92 \times 10^{-4} \mathrm{~J}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.