In the following fig., the flow of liquid through a horizontal pipe is shown. Three tubes A, B and C are connected to the pipe. The radii of the tubes A, B and C at the junction are respectively 2 cm, I cm and 2 cm.lt can be said that the

 

As cross-section areas of both the tubes A and C are same and tube is horizontal. Hence according to equation of continuity ${\mathrm{v}}_{\mathrm{A}} = {\mathrm{v}}_{\mathrm{C}}$ and therefore according to Bemoulli's theorem ${\mathrm{P}}_{\mathrm{A}} = {\mathrm{P}}_{\mathrm{C}}$ i.e., height of liquid is same in both the tubes A and C.