Work Energy And Power Question 184

Question: Power of a water pump is 2 kW. If g=10m/sec2 , the amount of water it can raise in one minute to a height of 10 m is [CBSE PMT 1990; Kerala PMT 2004]

Options:

A) 2000 litre

B) 1000 litre

C) 100 litre

D) 1200 litre

Show Answer

Answer:

Correct Answer: D

Solution:

P = mght therefore m = p×tgh=2×103×6010×10

=1200 kg

As volume = massdensity

therefore v=1200kg103kg/m3=1.2m3

Volume = 1.2m3=1.2×103litre=1200 litre



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