1.

The excess pressure in an bubble just below the water surface is (surface tension of liquid is 72 dyne /cm and atmosphericl pressure =1.013xx10^(5)N//m^(2), Radius of bubble =0.1 mm)

Answer»

`1.4xx10^(-3)N//m^(2)`
`1.44xx10^(4)N//m^(2)`
`1.44xx10^(2)N//m^(2)`
`1.027xx10^(25)N//m^(2)`

ANSWER :A


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