NEET Physics Mechanical Properties of Fluids Questions Solved


The pressure inside a small air bubble of radius 0.1 mm situated just below the surface of water will be equal to
[Take surface tension of water 70×10-3 Nm-1 and atmospheric pressure =1.013×105 Nm-2 ]

(a) 2.054×103 Pa            (b) 1.027×103 Pa

(c) 1.027×105 Pa            (d) 2.054×105 Pa

(c) Excess pressure inside the air bubble =2Tr

Pin-Pout=2Tr=2×70×10-30.1×10-3=1400 PaPin=1400+1.013×105=1.027×105 Pa

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