How to Calculate Energy of alpha particle from its Activity

[Aab e Hayat]

I am given with the activity of alpha particle.How could i calculate its energy from it?

 

[mfb]

"Activity of alpha particle" does not make sense. The activity of some radioactive probe (emitting alpha particles)?
Just based on that number, you cannot calculate the energy of the released alpha particles.

Please post the full and exact problem statement, and what you did so far. The homework template is designed to guide you in that respect.