Answer :

Given:


Radius1 = r1 = 0.1cm = 10-3m


Radius2 = r2 = 0.2cm = 2×10-3m


Here, two droplets form a bigger drop.


So, volume of bigger drop = sum of the volumes of the smaller drops.







Now, energy released is equal to the difference in the surface energies.



Hence, of energy is absorbed.


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