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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The lower end of a capillary tube of diameter 2.0 mm is dipped 8.00 cm below the surface of water in a beaker. What is the pressure required in the tube in order to blow a hemispherical bubble at its end in water? The surface tension of water at temperature of the experiments is 7.30×10−2Nm−1. 1 atmospheric pressure =1.01×105 Pa, density of water =1000 kg/m^3,g=9.80 ms^−2. also calculate the excess pressure.

The lower end of a capillary tube of diameter 2.0 mm is dipped 8.00 cm below the surface of water in a beaker. What is the pressure required in the tube in order to blow a hemispherical bubble at its end in water? The surface tension of water at temperature of the experiments is 7.30×10−2Nm−1. 1 atmospheric pressure =1.01×105 Pa, density of water =1000 kg/m^3,g=9.80 ms^−2. also calculate the excess pressure.

A uniform tube closed at a one end contains a pellet of mercury 10 cm long. When the tube is lept vertically with the closed-end upward the length of the air column trapped is 20cm. Find the length of the air column trapped when the tube is inverted so that the closed-end goes down. Atmospheric pressure`=75 cm of mercury.