A capillary tube of radius r can support...

A capillary tube of radius r can support a liquid of weight `6.28 xx 10^-4 N`. If the surface tension of liquid is `5 xx 10^-2 N//m`, the radius of the capillary tube will be.........

`2.5 xx 10^-4 m`

`2.0 xx 10^-3 m`

`1.5 xx 10^-2 m`

`2 xx 10^-4 m`

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