NEET Physics Question - Solid and Fluids - Surface Tension and Viscosity

Rankers Physics

Topic: Solid and Fluids

Subtopic: Surface Tension and Viscosity

A liquid does not wet the solid surface if angle of contact is:

(2020-Covid)

Equal to $60^\circ$

Greater than $90^\circ$

Zero

Equal to $45^\circ$

For a liquid to not wet a solid surface, it must form an obtuse angle of contact. Therefore, the angle of contact must be greater than $90^\circ$.