Key term for OCR GCSE Physics A, used in Uses and hazards.
The ratio of the final radioactive activity to the initial activity after a specific number of half-lives have passed.
Net decline appears in OCR GCSE Physics A revision content for Radioactivity, especially Uses and hazards and Hazards and half-life.
Create a free account to access OCR GCSE Physics A revision notes, track progress, and practise related key terms.
Radioactivity
Radioactive emissions • Half-life concept
