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If a 20-MeV Neutron Released in a Fission Reaction Loses Half Its

Question 26

Multiple Choice

If a 2.0-MeV neutron released in a fission reaction loses half its energy in each moderator collision, how many collisions are needed to bring it to (1/25) eV?


A) 6
B) 18
C) 26
D) 30
E) 4

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