A power plant must supply of thermal energy using fission of

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A power plant must supply

1.0\times10^{15}\,\text{J}

of thermal energy using fission of

^{235}\text{U}

. Taking the energy per fission as

200\,\text{MeV}

, Avogadro constant

N_A=6.02\times10^{23}\,\text{mol}^{-1}

and atomic mass unit

1\,\text{u}=1.66\times10^{-27}\,\text{kg}

, the mass of

^{235}\text{U}

consumed is nearest to (a)

48\,\text{kg}

(b)

1.2\,\text{kg}

(c)

12\,\text{kg}

(d)

120\,\text{kg}