Question

8. A nucleus of mass 220 amu in free state decays to emit an a-particle. Kinetic energy of the
o-particle emitted is 5.4 MeV. The recoil energy of the daughter nucleus is
(1) 0.25 MeV
(2) 0.5 MeV
(3) 0.1 MeV
(4) 0.75 MeV
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Answer 1

Answer:

(3)

Explanation:

by conservation of momentum