1 Mechanical Properties Of Fluids
A soap bubble of radius r is blown up to forma bubble of radius 2r under isothermal conditions. If T is the surface tension of soap solution, the energy spent in the blowing: 1) 12 πTr3 2) 24 πTr3 3) 12 πTr2 4) 24 πTr2
SOLUTION
Soap bubble has two free surfaces ∴work done to blow soap bubble from
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