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An air bubble of radius r in water is at...

An air bubble of radius r in water is at a depth h below the water surface at some instant if P is atmospheric pressure and d & T are the density and surface tension of water, what is the pressure inside the bubble ?

Text Solution

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Excess of pressure inside air bubble in water `= (2T)/(r )`
Total pressure inside air bubble = atmosphere pressure due liquid column + excess pressure due to surface tension.
`= P + h rho g + (2T)/(R )`
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