Two glass discs of radius `R = 5.0 cm` were wetted with water and put together so that the
Channel: Doubtnut
Date: 30/08/2020

Two glass discs of radius `R = 5.0 cm` were wetted with water and put together so that the thickness of the water layer between them was `h = 1.9 mu m`. Assuming the wetting to be complete. Find the force that has to be applied at right angles to the plates in order to pull them apart.