A spacecraft requires a continuous electric power of for a 100-day mission

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

A spacecraft requires a continuous electric power of

1\,\text{MW}

for a 100-day mission. Its fusion reactor operates at

25\%

efficiency and uses the deuterium–tritium reaction that releases

17.6\,\text{MeV}

per fusion event. The number of fusion events needed for the mission is approximately (a)

3.1\times10^{24}

(b)

6.1\times10^{24}

(c)

1.2\times10^{25}

(d)

5.9\times10^{25}