The lower end of a capillary tube is at a depth of 12cm and the water rises 3cm in it. The mouth pressure required to blow an air bubble at the lower end will be X cm of water column where X is
Text Solution
Verified by ExpertsThe correct answer is:
D
The lower end of capillary tube is at a depth of 12 + 3 = 15 cm from the free surface of water in
capillary tube. So, the pressure required = 15 cm of water column.
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