A student used a Geiger-Müller tube and counter to measure the radiation from a sample of a radioactive mineral. The counter recorded 1512 counts in 120 seconds. The background radiation count rate was 0.250.250.25 counts per second.
Calculate the corrected count rate for the mineral sample in counts per second.
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.