A pure sample of nuclide P P\,P containing N N\,N nuclei has an activity AAA. The half-life of P P\,P is 4500 years.
A pure sample of nuclide Q Q\,Q containing 2N nuclei has an activity 8A.
What is the half-life of nuclide QQQ?
562.5 years562.5\text{ years}562.5 years
1125 years1125\text{ years}1125 years
9000 years9000\text{ years}9000 years
18000 years18000\text{ years}18000 years
128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.