Q.

The power of a water pump is 2 kW. If g = 10 m s-2, the amount of water it can raise in one minute to a height of 10 m is

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a

2000 litres

b

10000 litres

c

100 litres

d

1200 litres

answer is D.

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Detailed Solution

P = mght or m = P×tg×h

m = 2000W ×60s10 ms-2×10m = 1200 kg = 1200 litre

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