Radius of a glass capillary is 0.5 mm . Find the height of the column of water when it is held vertical in water . The density of water is `10^(3)kg`
`m^(-3)` and the the angle of contact between glass and water is `0^(@),g=9.8ms^(-2)` and the surface tension of water `T=0.0727Nm^(-1)`.

Explanation

`r=0.5mm=5xx10^(-4)m`
`rho=10^(3)kgm^(-3)`
`theta=0 " " thereforecos0^(@)=1`
`g=9.8ms^(-2)`
`T=0.0727Nm^(-1)`
`T=(rhrhog)/(2costheta)`
`thereforeh=(2Tcostheta)/(rrhog)`
`=(2xx0.0727xx1)/(5xx10^(-4)xx10^(3)xx9.8)`
`thereforeh=0.0296m`
`thereforeh=2.96cm`