InterviewSolution
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InterviewSolution
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Assume that a neutron breaks into a proton and an electron . The energy reased during this process is (mass of neutron `= 1.6725 xx 10^(-27) kg` mass of proton `= 1.6725 xx 10^(-27) kg` mass of electron `= 9 xx 10^(-31) kg )` |
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Answer» Correct Answer - `0.73 MeV` Mass defect of the process is given by `Delta m=["Mass of neutron" -("mass of proton + mass of electron")]` ` =[1.6747 xx 10^(-27) -(1.6725 xx10^(-27) + 9 xx 10^(-31))]` `=0.0013 xx 10^(-27) kg` According to mass -energy relatinship, Energy released = `Delta m c^(2)` `E=(0.0013 xx10^(-27)) xx (3 xx 10^(8))^(2)` `(1.17 xx 10^(-3))/(l1.6 xx 10^(-19))` =0.73 xx10^(6) eV=0.73 MeV`. |
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