A source of energy of 100 W is producing energy
by fission of 1 kg U235. How long it can kept
generation of energy :- (approx)
080
(1) 2.5 x 104 yr
(2) 106 S
(3) 8.6 x 107 s
(4) 100 yr
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Explanation:
1 kg of Uranium-235 contains =
1000235.044×6.023×10^23=2.562×10241000235.044×6.023×10^23=2.562×10^24atoms
The energy released during each U-235 fission reaction = 202.5 MeV
Assuming all the U-235 atoms undergo fission, the total energy released by the fission is
= 8.312×10^13 joules
Power= time/energy
100= 8.312×10^13/time
time=8.312×10^11 seconds
hope it will help you .....
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