How much water a pump of 2 kW can raise in one minute to a height of 10 m? (take g = 10 m/s$^2$)
- 1000 litres
- 1200 litres
- 100 litres
- 2000 litres
The Correct Option is B
Solution and Explanation
The correct option is(B): 1200 litres
Power=\(\frac{work \,done}{time\, taken}=\frac{w}{t}\)
but W - mass \(\times\) gravity \(\times\) height
\(\therefore \, \, \, \, \, p=\frac{M \times g \times h}{t}\)
\(\Rightarrow \, \, \, \, M=\frac{P \times t}{g \times h}=\frac{2000 \times 60}{10 \times 10}=1200 \,kg.\)
i.e. 1200 litres as one litre has a mass of 1 kg.
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