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A fluid is flowing through a horizontal pipe of varying cross - section, with speed v ms – 1 at a point where the pressure is P Pascal. P At another point where pressure is 2 P Pascal its speed is V ms – 1. If the density of the fluid is  kg m – 3 and the flow is streamline, then V is equal to :

1. 2 v 2 P  
2. 2 v P  
3. 2 v P 2  
4. v P  

Correct answer: 2 v P  

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