Question

State if True or False. If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is 56.12 MeV [Mass of He nucleus is 4.0026 amu and mass of oxygen nucleus is 15.9994 amu]

• A. True
• B. False

Answer 1

The correct option is B False

False.
Energy released = change in rest energy = change in rest mass $\times c^2$
$\Rightarrow E=\frac{931}{c^2}\times \left(△mamu\right)\times c^2$
Now, 4He $\to$ 1O is the reaction
$\therefore perO,theenergyE=931\times (4\times 4.0026-15.9994)=931\times 0.011MeV=10.241MeV$