The lower end of a capillary tube of diameter \(2.00\) mm is dipped \(10.00\) cm below the surface of the water in a beaker. The pressure required in the tube in order to blow a hemispherical bubble at its end in water is? The surface tension of water at the temperature of the experiment is \(7.3\times 10^{-2}~\text{N/m},\) atmospheric pressure \(= 1.01\times 10^{5}~\text{Pa},\) the density of water \(= 1000~\text{kg m}^{-3}, g = 10~\text{ms}^{-2}.\)
1. \(1.01\times 10^{5}~\text{Pa}\)
2. \(2.02\times 10^{4}~\text{Pa}\)
3. \(1.03\times 10^{5}~\text{Pa}\)
4. \(2.01\times 10^{4}~\text{Pa}\)

Subtopic:  Surface Tension |
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