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What is the weight of water raised insid...

What is the weight of water raised inside the capillary tube of radius 0.4mm?(Take angle of contact of water with glass as `0^(@)`, surface tension of water `70"dyne"cm^(-1)`)

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The correct Answer is:
`17.60`
Weight of raised water `=pir^(2)h rho g`
`=pir^(2)((2Tcos theta)/(r rho g))rho g`
`=2piTr`
`=2xx22/7xx20xx0.04`
`:.W=17.6` dyne
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