1.
The energy released by the fission of one uranium atom is 200 MeV200\,\text{MeV}. The number of fissions per second required to produce 3.2 W3.2\,\text{W} of power is (Take 1 eV=1.6×10−19 J1\,\text{eV} = 1.6 \times 10^{-19}\,\text{J})