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 1u = 931 MeV)

  • Option 1)

    13.35 MeV

  • Option 2)

    2.67 MeV

  • Option 3)

    26.7 MeV

  • Option 4)

    6.675 MeV

 

Answers (1)

The energy associated with 1u =931MeV

Hence energy liberated = 0.02866X931MeV= 26.7 MeV

As          _{1}^{2}\textrm{H}+_{1}^{2}\textrm{H}\rightarrow _{2}^{4}\textrm{He}

\therefore Energy liberated per unit  = \frac{26.7}{4}MeV

=6.675 MeV


Option 1)

13.35 MeV

This option is incorrect.

Option 2)

2.67 MeV

This option is incorrect.

Option 3)

26.7 MeV

This option is incorrect.

Option 4)

6.675 MeV

This option is correct.

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