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Q.2)A cluster of clouds at a height of 1000 m above the earth burst and enough rain fell to cover an area of10° m2 with a depth of2 cm. How much work have been done in raising water of the height of clouds.(Take g = 9.8 ms-2 and density ofwater = 103 kg mA 1.960(B) 1.96 109J (C) 1.5 x 101J (D) 2.5 x 1013 J |
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Answer» Work done=mgh=density*volume*gh=1000*10^6*2*10^-2*9.8*1000=1.96*10^-11J |
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