Q.

A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is (given 1 u = 931 MeV)

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a

6.675 MeV

b

13.35 MeV

c

2.67 MeV

d

26.7 MeV

answer is A.

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Detailed Solution

As 12H+12H→24He Here, ΔM=0.02866 u ∴ The energy liberated per u is =ΔM×9314MeV =0.02866×9314MeV=26.74MeV=6.675MeV
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A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is (given 1 u = 931 MeV)