A drop of liquid pressed between two glass plates spreads to a circle of diameter 10 cm. Thickness of the liquid film is 0.5 mm and surface tension is `70xx10^(-3)Nm^(-1)` the force required to pull them apart is

A small drop of water kept pressed between two glass plates spreads as a circle of diameter 10cm. If the distance between the plates is 0.005 mm, and surface tension of water is 0.072 Nm^(-1) , what force will be required to separate the plates ?

Water film of thickness 0.5 mm exists between two flat circular glass plates of diameter 10 cm each. If the surface tension of water is 7 xx 10 N m^-1 , the force in Newton required to pull the plates apart is

A water drop of 0.05 cm^(3) is squeezed between two glass plates and spreads into area of 40 cm^(2) . If the surface tension of water is 70 dyne cm^(-1) , then the normal force required to separate the glass plates from each other will be

A drop of water is enclosed between two pieces of glass. The drop assumes a circular shape of diameter 10cm. If the distance between two glass plates is 0.50mm, the normal force required to separate out the plates will be ( T = 72dyne /cm and theta =0^@ )

A thin liquid film of thickness 5 xx 10^(-5) m is formed between two glass plates of surface area 1 xx 10^(-2) m^(2) , If the surface tension of the liquid is 60 xx 10^(-2) n/m the force that is required to separate the glass plates is

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.