Work Energy And Power Question 258

Question: How much water, a pump of 2 kW can raise in one minute to a height of 10 m, take g=10m/s2 ?

Options:

A) 1000

B) 1200

C) 100

D) 2000

Show Answer

Answer:

Correct Answer: B

Solution:

[b] P=Wt.Here,P=2kW=2000W.

W=Mgh=M×10×10=100M

And at=60s.

This gives, M=1200kg

Its volume =1200 litre as 1 litre of water contains 1 kg of its mass.

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