what is a surface tension, its p[roperties.?

Question

t=pghr/2

Answer 1

surface tension is the property of liquids arising from unbalanced molecular cohesive forces at or near the surface, as a result of which the surface tends to contract and has properties resembling those of a stretched elastic membrane.

the capillary action is due to surface tension properties

Answer 2

surface tension is the force acting perpendicularly to an imaginary line drawn on the liquid surface which tends to pull the surface apart along the line .its unit is Nm^2.its due to surface tension that insects can walk on the water surface,camphor dances on water,this makes water behave like stretched elastic membrane.