The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to

Assessment: JAMB UTME - Physics - 1997 Subject: Physics

Question 1 Report

The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to
Answer Details
The graphite rods in a nuclear reactor have the function of controlling the nuclear reaction by slowing down the neutrons produced by the fission process. This is because fast neutrons are less likely to be absorbed by uranium-235, which is the fuel used in nuclear reactors, whereas slow neutrons can be easily captured by it, thus sustaining the nuclear reaction. Therefore, the correct option is: "slowdown the neutrons and hence slow up the nuclear process".
Read lesson note on Electromagnetic Field (Part 2) (WAEC)
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