1. Three liquids of densities \(\rho_1\), \(\rho_2\) and \(\rho_3\) (with \(\rho_1 > \rho_2 > \rho_3\)),having the same value of surface tension \(T\), rise to the same height in three identical capillaries. The angles of contact \(θ_1\),\( θ_2\) and \(θ_3\) obey