In certain granite-rich areas, the average background radiation dose received by a resident is 6.8 mSv6.8\text{ mSv}6.8 mSv per year.
A single head CT (computed tomography) scan delivers a radiation dose of 1.7 mSv1.7\text{ mSv}1.7 mSv.
Calculate how many head CT scans would deliver a radiation dose equivalent to the total background radiation dose received by a resident in this granite-rich area over a period of 5.0 years.
Practise AQA GCSE Physics Hazards and uses of radioactive emissions and of background radiation (physics only) with exam-style questions for Foundation and Higher tier. 16 questions covering Background radiation, Different half-lives of radioactive isotopes, and Uses of nuclear radiation, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.