Hydraulics and Fluid Mechanics in ME
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be

3.5 metres of water column
3 metres of water column
4 m of water column
2 metres of water column

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

The resultant force acting on a floating body
Equal to the volume of liquid displaced
The force necessary to maintain equilibrium of a submerged body
The resultant force on a body due to the fluid surrounding it

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