CUET · PHYSICS · PYQ PAPER 2025
Identify the correct statement among the following in the context of a nuclear reactor.
- A Coolant is used to slow down the neutrons.
- B Moderator is used to slow down the neutrons.
- C Cadmium rods are used to slow down the neutrons.
- D Energy released is of the order of keV.
Answer & Solution
Correct Answer
(B) Moderator is used to slow down the neutrons.
Step-by-step Solution
Detailed explanation
Moderator is used to slow down the neutrons. A moderator (such as graphite, heavy water, or light water) is specifically used to slow down fast-moving neutrons produced during fission to "thermal" speeds, making them more likely to cause further fission in \(U^{235}\)
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