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The weight of liquid column in a capilla...

The weight of liquid column in a capillary tube is `11xx10^(-4)N`. If the radius of tube is 7 mm, calculate the surface tension of liquid.

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Weight of liquid column `W=11xx10^(-4)N`, Radius of capillary tube r = 7 mm = `7xx10^(-3)m`
Weight of liquid column `W=2piT`,
Surface tension `T=W/(2pir)=(11xx10^(-4))/(2xx22/7xx7xx10^(-3))rArrT=0.025N//m`
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