Question

what is surfase tension explain it

Answer 1

it is a force acting normal to the imaginary line drawn along the surface of a liquid .
also defined as force acting per unit length .
it s expression is
T = Force/length
units in SI system is N/m
in cgs system is dyne/cm

Answer 2

Surface Tension is a force acting normal to the imaginary line drawn along a surface of a liquid. Force acting per unit length is also called surface tension. Its SI unit is N/m. The expression for surface tension is:-
Force/Length