A water drop of radius 1cm is broken into 729 equal droplets. If surface tension of water is 75 dyne/cm, then the gain in surface energy upto first decimal place will be: [Given 
= 3.14]
Text Solution
Verified by ExpertsThe correct answer is:
C
Initial surface energy = TA
Where 
is surface tension and A is surface area
To get final radius of drops by volume conservation
Initial radius
final radius
Final surface energy
Gain in surface energy
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