NEB NotesNepal
Unit 21 • Class 12Physics (Phy.102)

Radioactivity & Nuclear Reactions

रेडियोधर्मिता तथा आणविक प्रतिक्रियाहरू

Alpha, beta, and gamma properties, radioactive decay law N = N₀ e^(-λt), half-life T_1/2 = 0.693/λ and mean life, activity of radioactive substance, mass defect and nuclear binding energy, nuclear fission and fusion.