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At a point P in a water pipe line the ve...

At a point P in a water pipe line the velocity is `1ms^(-1)` and the pressure is `3xx10^(5)pa`. At another point Q the area of cross section is half that of at P and the pressure is `5xx10^(5` pa. The difference of heights between P and Q in metre is `(g=10ms^(-2))`

A

10.5

B

20.15

C

4.5

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
`p_(1)+(1)/(2)rhov_(1)^(2)+rhogh_(1)=p_(2)+(1)/(2)rhov_(2)^(2)+rhogh_(2)`
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Knowledge Check

  • A horizontal pipeline carries water in a streamline flow. At a point along the tube where the cross sectional area is 10^(-2)(m^2) , the water velcity is 2m//s and the pressure is 8000Pa. The pressure of water at another point where cross sectional area is 0.5xx(10)^(-2)(m^2) is

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