A liquid film is formed over a ring of area `0.0xx10^4 cm^2`. The surface energy is
(Given surface tension of liquid - `0.5N//m`)

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

A film of soap solution is formed in a rectnagular wire frame of length 10 cm and breadth 5 cm . The surface energy of the film , if the surface tension of soap solution is 0.035 N/m is

The surface energy of soap liquid film on a ring of area 0.15m^2 is (Surface tension of liquid = 5 N//m)

A thin liquid film of thickness 5xx10^-5m is formed between two glasses plates of surface area 1xx10^-2 m^2 . If the surface tension of the liquid is 60xx10^-2N//m the force that is required to separate the glass plates is.

A horizontal circular loop of wire of radius 0.02 m is lowered into a cruid oil form film . The force due to surface tension of liquid is 0.0113 N . Calculate the surface tension of crude oil.

A capillary tube of radius r can support a liquid of weight 6.28 xx 10^-4 N . If the surface tension of liquid is 5 xx 10^-2 N//m , the radius of the capillary tube will be.........

A certain number of spherical drops of a liquid of radius r coalesce to form a single drop of radius R and volume V . If T is the surface tension of the liquid, then

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

A circular loop of a thin wire of radius 7 cm is lifted from the surface of a liquid. An additional force of 44xx10^-2 N is required to detach the loop from the surface of the liquid. The surface tension of the liquid ib n N//m is

Eight droplets of water, each of radius 0.2 mm, coalesce into a single drop . Find the change in total surface energy. (Surface tension of water = 0.072 N/m)