Atoms And Nuclei Question 352

Question: For fission of uranium $ _{95}^{235}U $ , one needs

Options:

A) very fast neutrons (a few electrons volts)

B) low energy neutrons ( $ \approx $ 0.04 eV at 300K)

C) a moderator making neutrons slow

D) both and

Show Answer

Answer:

Correct Answer: D

Solution:

  • Fission of $ _{92}^{235}U $ is possible by only slow neutrons. To produce slow neutrons, one has to use moderators so, that fission is possible.


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