One end of uniform glass capillary tube of radius r = 0.05 cm is immersed vertically in water to a depth h = 2 cm . The excess pressure in `N//m^(2)` required to blow an air bubble out the tube ( surface tension pof water =`7 xx 10^(-2) N//m`, density of water = `10^(3) kg/m^(3) `and ` g = 10m//s^(2)`).

Options

A. `0.0048 xx 10^(5)`
B. `0.0066 xx 10^(5)`
C. `1.0048 xx 105`
D. `1.0066 xx 10^(5)`

Answer

A