List of top Physics Questions on Surface Tension asked in KEAM

If the work done in increasing the area of a thin soap film from $A$ to $3A$ is $W$, then the surface tension of the soap solution is

Two soap bubbles each with radius \(r_1\) and \(r_2\) coalesce in vacuum under isothermal conditions to form a bigger bubble of radius \(R\). Then \(R\) is equal to

Two soap bubbles each with radius \(r_1\) and \(r_2\) coalesce in vacuum under isothermal conditions to form a bigger bubble of radius \(R\). Then \(R\) is equal to

Two soap bubbles each with radius \(r_1\) and \(r_2\) coalesce in vacuum under isothermal conditions to form a bigger bubble of radius \(R\). Then \(R\) is equal to