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Question

Consider the nuclear reaction,

X200 A110+B90

If the binding energy per nucleon for X,A and B is 7.4 MeV,8.2 MeV and 8.2 MeV respectively, what is the energy released?

A
200 MeV
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B
90 MeV
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C
110 MeV
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D
160 MeV
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Solution

The correct option is D 160 MeV
Given,
Binding energy of X=7.4 MeVBinding energy of A=8.2 MeVBinding energy of B=8.2 MeV

Energy released Q = BE of Products − BE of Reactants

=(8.2×110+8.2×90)(7.4×200)

=16401480=160 MeV

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, (D) is the correct answer.

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