Why is a moderator needed in a normal uranium fission

Chapter 31, Problem 5MCQ

(choose chapter or problem)

Problem 5MCQ

Why is a moderator needed in a normal uranium fission reactor?

(a) To increase the rate of neutron capture by uranium-235.

(b) To increase the rate of neutron capture by uranium-238.

(c) To increase the rate of production of plutonium-239.

(d) To increase the critical mass of the fission fuel.

(e) To provide more neutrons for the reaction.

(f ) All of the above.

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