Physics-
General
Easy
Question
In the following fig. is shown the flow of liquid through a horizontal pipe. 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, 1 cm and 2 cm. It can be said that the
- Height of the liquid in the tube A is maximum
- Height of the liquid in the tubes A and B is the same
- Height of the liquid in all the three tubes is the same
- Height of the liquid in the tubes A and C is the same
The correct answer is: Height of the liquid in the tubes A and C is the same
As cross-section areas of both the tubes A and C are same and tube is horizontal. Hence according to equation of continuity 
and therefore according to Bernoulli's theorem 
i.e. height of liquid is same in both the tubes A and C.
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