n is 3 MeV and the ve mass number of
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Transcribed Image Text:If the energy of a fast
neutron is 3 MeV and the
effective mass number of
water is 3, how many
collisions are required to
convert it into heat neutrons
with a energy of 0.03 MeV?
O 27.72
O 47.74
Need the answer as soon
as possible
O 37.73
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