Question

A molecule of water on the surface experiences a net ______.

पर्याय

• downward resultant unbalanced adhesive force

• upward resultant unbalanced cohesive force

• downward resultant unbalanced cohesive force

• upward resultant unbalanced adhesive force

Answer 1

A molecule of water on the surface experiences a net downward resultant unbalanced cohesive force.

Explanation:

Due to the net number of molecules tugging it in the downward direction (molecule A in the picture below), a molecule on the surface experiences a net force (Cohesive force) in the downward direction.

A molecule well inside, on the other hand, is equally tugged in all directions by molecules around it (molecule Bas in picture).