How much water, a pump of 2kW can raise in one minute to a height of 10m? Take g=10m/s2 .
A
1000 litres
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B
1200 litres
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C
100 litres
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D
2000 litres
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Solution
The correct option is B 1200 litres P=wt Here, P=2kW=2000W. w=mgh=m×10×10=2000×60 (t=60s). This gives, m=1200kg Volume = 1200 litres, as 1 litre of water contains 1kg of its mass.