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 wateris 10^(3)kgm^(-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).

Radius of a glass capillary is 0.5 mm . Find the height of the column

1.	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 wateris 10^(3)kgm^(-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).
Answer» Solution :`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`