Question

A 'U' tube contains oil, alcohol and water as shown in the figure. The density of oil is $0.6gc{m}^{-3}$ and that of alcohol is $1.6gc{m}^{-3}$. If oil and water surfaces are at the same level, find the height of the water column.

Answer 1

Now the pressure along the horizontal line will remain same.

So $P_1=P_2$

${\rho }_{oil}g\left(12\right)+{\rho }_{cc{l}_4}g(C-12)={\rho }_{water}gC$

$0.6\times 12+1.6\times (C-12)=C$

$C=20cm$