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A barometer contains two uniform capilla...

A barometer contains two uniform capillaries of radii `1.44 xx 10^(-3) m and 7.2 xx 10^(-4)` If the height of liquid in narrow tube is 0.2m more than that in wide tube, the true pressure difference is computed to be `P xx 310 N//m^2` Density of liquid `= 10^3 kg//m^3`, surface tension `= 72 xx 10^(-3) ` N/m and `g= 9.8m//s^2` Find P.

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