The pressure inside a small air bubble of radius `0.1mm` situated just below the surface of water will be equal to `("Take surface tension of water" 70xx10^(-3)1^(J)m^(-1) "and atmospheric pressure" =1.013xx10^(5)Nm^(-2))`

Options

A. `2.054xx10^(3)` Pa
B. `1.027xx10^(3)` Pa
C. `1.027xx10^(5)` Pa
D. `2.054xx10^(5)` Pa

Answer

C

Explanation

Pressure inside air bubble
`p=p_(0)+(2S)/( r )`
`=1.013xx10^(5)+(2xx70xx10^(-3))/(0.1xx10^(-3))`
`=1.013xx10^(5)+1.4xx10^(3)`
`=1.027xx10^(5)` Pa