Q .     A `U^(235)` nuclear reactor generates energy at rate of `3.7xx10^7 J/s`. Each fission liberates `185 Mev` useful energy. If the reactor has to operate for `144xx10^4` seconds, then, the mass of fuel needed is( Assume Avogadro's number`=6xx10^23 mol^(-1)`, `1eV=1.6xx10^(-19)J)`

EAMCET 2013
A

`70.5 kg`

B

`0.705 kg`

C

`13.1 kg`

D

`1.31 kg`

HINT

`text(Energy produced) = text(time) xx text(energy per unit time)`

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