Question
Water is flowing through two horizontal pipes of different diameters which are connected together. In the first pipe the speed of water is 4.0 m/s and the pressure is . Calculate the speed and pressure of water in the second pipe. The diameters of the pipes are 3.0 cm and 6.0 cm respectively.

None of these



medium
Solution
If A is the area of crosssection of a pipe at a point and v is the velocity of flow of water at that point, then by the principle of continuity, we have
Av = constant
Here,
= 1.0 m/s.
By Bernoulli’s theorem
For water,
.
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