MHT CET Physics question
Water rises upto a height of 4 cm in a capillary tube. The lower end of the capillary tube is at a depth of 8 cm below the water level. The mouth pressure required to blow an air bubble at the lower end of the capillary will be 'X' cm of water, where X is equal to [MHT-CET 2020]
Answer: (D)
Solution
The excess pressure in the bubble of radius equal to the tube radius is , i.e. 4 cm of water, and the hydrostatic pressure at the depth
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