JEE Advanced 2015 Physics question
A fission reaction is given by , where and are two particles. Considering to be at rest, the kinetic energies of the products are denoted by , , (2 MeV) and (2 MeV), respectively. Let the binding energies per nucleon of , and be 7.5 MeV, 8.5 MeV and 8.5 MeV, respectively. Considering different conservation laws, the correct option(s) is(are)
Answer: (A)
Solution
Charge: , so and together carry no charge; mass number: , so they carry one nucleon each: both are neutrons. (B) violates conservation of nucleon number (p + e carries only one nucleon) and lepton number; (C) violates charge conservation. Energy released
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