The speed of fast-moving neutrons in a nuclear reactor can be reduced by using?

Assessment: WAEC SSCE - Physics - 2022 (Objective) Subject: Physics

Question 1 Report

The speed of fast-moving neutrons in a nuclear reactor can be reduced by using?
Answer Details
In a nuclear reactor, neutrons are used to induce and sustain a chain reaction. Fast-moving neutrons, however, are not very efficient at inducing fission, so they need to be slowed down to increase the likelihood of fission. This process is called moderation. One way to moderate neutrons is by using materials with light nuclei that can scatter neutrons without absorbing them, such as graphite. Therefore, the correct answer is "graphite rods".
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