Question
Physics Question on Nuclear Energy
In a nuclear reactor heavy nuclei is not used as moderators because
A
They will break up
B
Elastic collision of neutrons with heavy nuclei will not slow them down.
C
The net weight of the reactor would be unbearably high
D
Substance with heavy nuclei do not occur in liquid or gaseous state at room temperature.
Answer
Elastic collision of neutrons with heavy nuclei will not slow them down.
Explanation
Solution
The correct answer is (B) : Elastic collision of neutrons with heavy nuclei will not slow them down..