Question

Some water drops of radius (r) each coalesce to form a big drop of radius R. The rise in temperature is

Answer 1

Hey Dear here is your Answer :

*A certain number of spherical drops of a liquid of radius ‘r’ coalesce to form a single drop of radius ‘R’ and volume ‘V’. If ‘T’ is the surface tension of the liquid, then -

(1) energy = 4VT (1r−1R)(1r−1R) is released

(2) energy = 3VT (1r+1R)(1r+1R) is absorbed

(3) energy = 3VT  (1r−1R)(1r−1R) is released

(4) energy is neither released nor absorbed

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