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

The pressure in the air space above an oil (sp. gr. 0.8) surface in a

1.	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
A.	metres of water column
B.	metres of water column
C.	.5 metres of water column
D.	m of water column
Answer» C. .5 metres of water column