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Two water drops each of radius '\(r\)' coalesce to from a bigger drop. If '\(T\)' is the surface tension, the surface en…

Q1

Two water drops each of radius '\(r\)' coalesce to from a bigger drop. If '\(T\)' is the surface tension, the surface energy released in this process is :

[JEE Main 2025, 2 Apr (Shift 2)]

a

\(4{\mathrm{πr}}^{2}\mathrm{T}\left[2-{2}^{\frac{2}{3}}\right]\)

b

\(4\pi {r}^{2}T\left[2-{2}^{\frac{1}{3}}\right]\)

c

\(4\pi {r}^{2}T[1+\sqrt{2}]\)

d

\(4\pi {r}^{2}T[\sqrt{2}-1]\)

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