A glass rod of diameter `d_(1)=1.5 mm` in inserted symmetrically into a glass capillary with inside diameter `d_(2)=2.0` mm. Then the whole arrangement is vertically oriented and brought in contact with the surface of water. To what height will the liquid rise in the capillary?
Surface tension of water `=73xx10^(-3)N//m`

Answer

6

Explanation

`Tpid_(1)+Tpid_(2)=rho(pi)/(4)(d_(2)^(2)-d_(1)^(2))hg`
`h=(4T(d_(1)+d_(2)))/(rhog(d_(1)+d_(2))(d_(2)-d_(1)))`