A radioactive source has a count rate of 600 counts per minute (cpm)600\text{ counts per minute (cpm)}600 counts per minute (cpm).
The half-life of the radioactive source is 8 minutes8\text{ minutes}8 minutes.
What is the count rate of the radioactive source after 16 minutes16\text{ minutes}16 minutes?
0 cpm0\text{ cpm}0 cpm
150 cpm150\text{ cpm}150 cpm
300 cpm300\text{ cpm}300 cpm
600 cpm600\text{ cpm}600 cpm
41 exam-style questions on OCR GCSE Physics Radioactive emissions. Each one has a worked solution and a mark scheme showing where the marks go.