Question

The rate of fission reaction of ${}_{92}{U}^{235}$ can be reduced by,

• A. increasing the speed of the neutrons taking part in the reaction.
• B. increasing the number of neutrons taking part in the reaction.
• C. decreasing the number of neutrons taking part in the reaction.
• D. decreasing the speed of the neutrons taking part in the reaction.

Answer 1

The correct option is D decreasing the speed of the neutrons taking part in the reaction.

The rate of fission reaction increases proportional to the speed of the neutrons. Faster the neutrons, faster will the reaction and vice versa.

Hence, $\left(D\right)$ is the correct answer.