PQRS is a rectangular frame of copper wire shown in figure the side RS of the frame is movable.
Channel: Doubtnut
Date: 2020-02-02

PQRS is a rectangular frame of copper wire shown in figure the side RS of the frame is movable. If a soap film is formed on it then what is the diameter of the wire to maintain equilibirum (given surface tension of soap solution `=0.045N//m` and density of copper `=8.96xx10^(3)kg//m^(3))`