What do you means by Surface Tension ?

1.	What do you means by Surface Tension ?
Answer» The property of a liquid due to which its free surface tries to have minimum surface area is called surface tension. A small liquid drop has spherical shape due to surface tension. Surface tension of a liquid is measured by the force acting per unit length on either side of an imaginary line drawn on the free surface of liquid, then T = (F/L). (1) It depends only on the nature of liquid and is independent of the area of surface or length of line considered. (2) It is a scalar as it has a unique direction which is not to be specified. (3) Dimension : [MT^–2]. (Similar to force constant) (4) Units : N/m (S.I.) and Dyne/cm [C.G.S.]

Answer»

The property of a liquid due to which its free surface tries to have minimum surface area is called surface tension. A small liquid drop has spherical shape due to surface tension. Surface tension of a liquid is measured by the force acting per unit length on either side of an imaginary line drawn on the free surface of liquid, then T = (F/L).

(1) It depends only on the nature of liquid and is independent of the area of surface or length of line considered.

(2) It is a scalar as it has a unique direction which is not to be specified.

(3) Dimension : [MT^–2]. (Similar to force constant)

(4) Units : N/m (S.I.) and Dyne/cm [C.G.S.]

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