1.

A manometer connected to a closed tap reads 3.5 × 105 N/m2. When the valve is opened, the reading of manometer falls to 3.0 × 105 N/m2, then velocity of flow of water is

A.            100 m/s                                  
B.            10 m/s                                    
C.            1 m/s                                       
D.             \[10\sqrt{10}\] m/s
Answer» C.            1 m/s                                       


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