Ten litre of water per second is lifted from well through 20m and delivered with a velocity of 10 m/s, then the power of the motor is :

Options

A. 1kW
B. 1.5 kW
C. 2kW
D. 2.5 kW

Answer

B

Explanation

In this case,`P=(mgh+(1)/(2)mv^(2))/(t)`
`impliesP=(m)/(t)[gh+(v^(2))/(2)]`
`impliesP=(10)/(1)[10xx10+(10xx10)/(2)]W=1500 W`