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Question

Binding energy per nucleon of 1H2 and 2He4 are 1.1 MeV and 7.0 MeV respectively. Energy released in the process 1H2+1H2 2He4 is

A
2.8 MeV
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B
16.6 MeV
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C
25.2 MeV
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D
23.6 MeV
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Solution

The correct option is D 23.6 MeV
Binding Energy of 1H2=2(1.1)=2.2 MeV
For 2 atoms of 1H2 Binding Energy is 4.4 MeV
Total binding energy of 2He4=28 MeV

Energy released would be
Δ E = total binding energy of 2He42 (total binding energy of 1H2)
=4×7.04.4=23.6 MeV

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