A square wire frame of length `l` is dipped in a solution. When the frame is taken out, a liquid
Channel: Doubtnut
Date: 2020-01-19

A square wire frame of length `l` is dipped in a solution. When the frame is taken out, a liquid film is formed. What is the algebraic sum of all the force acting on the frame due to surface tension of the liquid? (given`sigma=`surface tension of the liquid).