Physics for IGCSE & O level - Atoms And Radioactivity (Section 1 - No. 40)
In the context of radioactivity, what does 'activity' measure?
The total energy released by a radioactive source.
The rate at which a radioactive source emits radiation.
The half-life of a radioactive element.
The mass of a radioactive sample.
Explanation
Activity measures the rate of radiation emission.
Comments (0)
