A motor pump lifts 6 tonnes of water from a well of depth 25 m to the first floor of height 35 m from the ground floor in 20 minutes. The power of the pump (in kW) is [`g = 10 m s^(-2)`]

Options

A. 3
B. 6
C. `1.5`
D. 12

Answer

A

Explanation

Give :
Height of first floor (h) = 35 m
Time (t) = 20 m
We know that,
Power, `P=("work")/("time")`
`P=(mgh)/(t)`
`=(600xx10xx(35-25))/(20)`
`= (600xx10xx10)/(20)`
`= (6000)/(2)=3000 W = 3k W`