A U – tube with both limbs open to atmosphere contains two immiscible liquids of densities ρ1 and ρ2. Under equilibrium, the distance h is given by,
1
\(h = L\left( {\;1 - \frac{{{\rho _1}}}{{{\rho _2}}}} \right)\)
2
\(h = L\left( {\;1 + \frac{{{\rho _2}}}{{{\rho _1}}}} \right)\)
3
\(h = L\;\left( {\frac{{{\rho _1}}}{{{\rho _2}}}} \right)\)
4
\(h = L\left( {\;1 - \frac{{{\rho _2}}}{{{\rho _1}}}} \right)\)