In the diagram shown, the difference in the two tubes of the manometer is 5 cm, the cross section of the tube at A and B is \[6m{{m}^{2}}\]and \[10m{{m}^{2}}\]10 mm2 respectively. The rate at which water flows through the tube is \[(g=10\,m{{s}^{-2}})\] [JEE ONLINE 19-04-2014] |
A) 7.5 cc/s
B) 8.0 cc/s
C) 10.0 cc/s
D) 12.5 cc/s
Correct Answer: A
Solution :
According to Bernoullis theorem, |
(1) |
According to the equation of continuity |
...(2) |
From equation (2), or, |
Putting this value of in equation (1) |
Solving we get |
Therefore the rate at which water flows through the tube |
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