A capillary tube of radius 0.50 mm is dipped vertically in a pot of water. Find the difference between the pressure of the water in the tube 5.0 cm below the surface and the atmospheric pressure. Surface tension of water 
.
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Radius of capillary tube 
Depth (where pressure is to be found) 
Surface tension of water T 
Excess pressure at 5 cm before the surface:
Excess pressure at the surface is given by:
Difference in pressure: 
Hence, the required difference in pressure is 
.
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