A trapped air bubble of volume v, is released froma depth "h' measured from the water surface in a large water tank. the volume ofthe bubble grows to 2v, as it

A trapped air bubble of volume V, is released froma depth "h' measured from the water surface in a large water tank. The volume ofthe bubble grows to 2V, as it reaches just below the surface. The temperature ofthe water and the pressure above the surface of water (10 NIm') remain constant throughout the process. Ifthe density of water is 1000 kg/m' and the accelcration due to gravity is 10 m/s, then the depth 'h' is: