When an air bubble of radius `'r'` rises from the bottom to the surface of a lake, its radius become
Channel: Doubtnut
Date: 23/08/2020

When an air bubble of radius `'r'` rises from the bottom to the surface of a lake, its radius becomes `5r//4` (the pressure of the atmosphere is equal to the `10 m` height of water column). If the temperature is constant and the surface tension is neglected, the depth of the lake is