Assume that a drop of liquid evaporates by decrease in its surface energy, so that its temperatu...

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Assume that a drop of liquid evaporates by decrease in its surface energy, so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible ? The surface tension is \( T \), density of liquid is \( \rho \) and \( L \) is its latent heat of vaporization [JEE (Mains) 2013]
(a) \( \rho L / T \)
(b) \( \sqrt{T / \rho L} \)
(c) \( T / \rho L \)
(d) \( 2 T / \rho L \)
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