How many free surfaces are there in a liquid film ?

How many free surface are there in a gas?

What is the meant by surface film? How many surface film are there in a bubble?

Calculate the surface tension of a liquid if 5 xx 10^(-3)Nm^(-1) of work is done to increase the surface area of a liquid film from 4 cm xx 3" cm to 8 cm "xx "5 cm."

What is the meant by surface film? How many surface film are there in drop?

If the surface tension of a liquid is 5 N/m then the surface energy of the liquid film on a ring of area 0.15 m^(2) is

Determine the surface energy of a liquid film formed on a ring of area 0.15 m^2 . The surface tension of the liquid =5N. m^-1 .

A thin wire ring of radius of 2m is placed on the surface a liquid. If a force of 4N is required to pull this ring from the surface of liquid (before the liquid film breaks) then the surface tension of liquid is

A liquid is filled in a vessel and a hole is made at a depth h below the free surface of the liquid. Statement-1 : Greater is the distance of the hole form the free surface of liquid, greater will be the velocity of efflux. And Statement-2 The speed of the liquid coming out of the orifice depends on the quantity of liquid in the vessel.