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JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

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

Answer: (D)

Solution

P = mgh/t ⟹ m = Pt/(gh) = (2000×60)/(10×10) = 120000/100 = 1200 kg = 1200 litre.

Question ID VK-153995