Chapter: Surface Energy : Derive the expression of the surface Energy of a liquid drop & soap bubble ...........
A soap bubble of radius r is blown up to form a bubble of radius R under isothermal conditions. If S is the surface tension of soap solution, the energy spent in the blowing will be
E = S. 2Δa ; where Δa is the change in area
∴ E = S. 8 π R²
* * • Surface Tension
* • Liquid Film // Surface...
* • Surface Energy // Deri...