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In a capillary tube water rises up to a ...

In a capillary tube water rises up to a certain height and the upward force due to surface tension balances the force of `7.5xx10^-4 N` due to weight of water. If the surface tension of water is `6xx10^-2 N. m^-1` then what will be the internal circumference of the capillary tube?

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`1.25xx10^-2 m`
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