Question

14.When a large bubble rises from the bottom of lake to the surface, its radius doubles. If the atmospheric pressure is equal to that of column of water height H, then the depth of lake is
1.H
2.2H
3.7H
4.8H
CORRECT ANS IS 3. PLZ EXP.

Answer 1

if the atm preasure is equal to that of column of water then the depth of lake is 7H