The thickness of window panes of old buildings is more at the bottom than at the top, which is due to

The thickness of window panes of old buildings is more at the bottom t

1.	The thickness of window panes of old buildings is more at the bottom than at the top, which is due to
Answer» Surface tension of GLASS Viscosity of glass Expansion of solid as a GIVEN temperature Expansion of LIQUID at a given temperature Solution :Glass is SUPERCOOLED liquid and FLOWS .