The number of fissions that must take place is X= 3.2 x 1013 fissions/s
Let x be number of fissions per second.
Each fission produces = 200 MeV.
X = 200×10⁶eV is produced in one second by x fissions.
But 1 eV =1.6×10−¹⁹ J
Power produced = 200×10⁶ × 1.6×10−¹⁹Joule per second.
But, 1000 J/s = 1 kW.
The required power is 1 kW.
X for 1 kW = 200×10⁶ × 1.6×10−¹⁹× 10³
X= 3.2 x 1013 fissions/s
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