In a nuclear reactor, the fuel is consumed at the rate of 1 mg/s. The power generated in kilowatt is
Answer & explanation
Correct answer: option 2
Power $P=\frac{\text { Energy }}{\text { time }}=\frac{m c^2}{t},=1 \times 10^{-6} \times(3 \times 10^8)^2$
= $9 \times 10^{10}$ W = $9 \times 10^7$ kW.