In order to float a ring of area 0.04 m in a liquid of surface tension 75 N/m, the required surface energy will be

A film is held on a ring of area 0.05 m^(2) of liquid of surface tension 0.05 N/m then the surface energy is

A film is held on a ring of area 0.05m^2 of liquid of surface tension 0.05 N/m, then the surface energy is

The surface tension of liquid is 5 N//m . If a thin film of area 0.04 m^2 is formed on a loop, then its surface energy will be

The surface tension of a liquid is 0.5 N/m. if a liquid film is formed on a ring of area 0.02m^2 then its surface energy will be

The surface tension of liquid is 4N//m . If a thin film of area 0.02 m^2 is formed on a loop, then its surface energy will be

The surface tension of a liquid is 0.5 N/m . If a liquid film is formed on a ring of area 0.02 m^(2) then its surface energy will be

A metal ring of internal and external radii 15 mm and 20 mm respectively is placed horizontally on the surface of a liquid of surface tension 0.03 N/m To detach the ring from the liquid surface the force required is

A square wire frame of side / is floating on the surface of liquid of surface tension T. The force required to pull out the frame from the liquid is