surface tension of liquids

1.	surface tension of liquids
Answer» Really helpful.<br>Surface tension\xa0is the property of any liquid by virtue of which\xa0tries to minimize its free surface area.Surface tension of a liquid is measured as the force acting per length on an imaginary line drawn tangentially on the free surface the liquid.Surface tension S = Force/Length = F/l = Work done/Change in areaIts SI unit is Nm-1\xa0or Jm-2\xa0and its dimensional formula is [MT-2].It is a scalar quantity. Surface tension is a molecular phenomenon which is due to cohesive force and root cause of the force is electrical in nature.Surface tension of a liquid depends only on the nature of liquid and independent of the surface area of film or length of the line .Small liquid drops are spherical due to the property of surface tension.

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