Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725×10−27kg, Mass of proton =1.6725×10−27kg ,Mass of electron =9×10−31kg)
0.50625MeV
7.10MeV
6.30MeV
5.40MeV
A
0.50625MeV
B
7.10MeV
C
6.30MeV
D
5.40MeV
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Solution
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n→p+e Δm=(mp+me)−mn Δm=−9×10−31kg Energy released =9×10−31×(3×108)2J =9×10−31×(3×108)21.6×10−13 =0.50625MeV
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