Answer:
They follow Einstein's equation, which allows for the conversion of mass to energy is true about nuclear reaction.
Explanation:
The nuclear reactions happen according the Einstein’s equation, i.e., when the mass deficit between the weight of the nucleus as a whole and the individual constituent components occurs, this deficit is converted to energy that is released and used for nuclear reactions.
No mass can never be made or destroyed. So is energy. Energy too has to remain constant; there can be a change in the form, energy can be converted into mass or vice versa but the constancy has to be maintained.
