If velocity of flow is $4 \,m / s$, then velocity head is .........$m$
A$0.2$
B$0.4$
C$0.6$
D$0.8$
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D$0.8$
d (d)
Velocity head is given as $\frac{ v ^2}{2 g }$
so putting the velocity as $v =4 m / s$ we get the velocity head as $\frac{16}{2 \times 10}=0.8$ meter
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