MHT CET Physics question
A number of droplets, each of radius 'r' combine to form a drop of radius 'R'. If 'T' is the surface tension, the rise in temperature will be [Assume that the energy evolved is converted into heat] [MHT-CET 2009]
Answer: (A)
Solution
Energy released for total volume , which is converted to heat , so $Δθ =
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