The principle of controlled chain reaction is used in

If each fission in a $U^{235}$ nucleus releases $200 \, MeV$, how many fissions must occur per second to produce a power of $1 \, kW$?

Explain the phenomenon of nuclear fission.

In a working nuclear reactor,Cadmium rods (control rods) are used to

How much mass of uranium must be destroyed per minute to operate a nuclear reactor of $600\,MW$?

What is the approximate power output of a $_{92}U^{235}$ reactor if it consumes $2 \ kg$ of fuel in $30 \ days$ and each fission releases $185 \ MeV$ of usable energy? (Avogadro's number $N_A = 6.02 \times 10^{26} \text{ atoms/kmol}$)