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Q.

A cubical vessel of height 1 m is full of water. What is the amount of work done in pumping water out of the vessel? g=10 m/s2

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a

1250 J

b

1000 J

c

5000 J

d

2500 J

answer is B.

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Detailed Solution

Volume of water, v=(1)3 m3=1 m3

Density of water ρ=103 kgm−3

Mass of the water, m=vρ=103kg work done,

W=mgh=103×10×12=5000J

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