Question

with the help of molecular forces explain why free surface of liquid in contact with solid is curved​

Answer 1

Answer:

Surface tension is measured as the energy required to increase the surface area of a liquid by a unit of area. The surface tension of a liquid results from an imbalance of intermolecular attractive forces, the cohesive forces between molecules:

A molecule in the bulk liquid experiences cohesive forces with other molecules in all directions.

A molecule at the surface of a liquid experiences only net inward cohesive forces.