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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, `d` and `T` are density and surface tension of water respectivley . the pressure inside the bubble will be :

A

P+hdg-(4T/r)

B

P+hdg+(2T/r)

C

P+dhg-(2T/r)

D

P+hdg + (4T/r)

Text Solution

Verified by Experts

The correct Answer is:
B

`becauseP=P_(out)+(2T)/(r)`
`=P+hdg + (2T)/(r)`
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