Physics · May / June 2025 · Paper 12 · Question 38

An isotope has a half-life of 6000 years. How much time passes before the count rate due to emissions from a sample of the isotope decreases to 1/16 of the initial value?

1. A6000 years
2. B18 000 years
3. C24 000 years
4. D96 000 years

As printed in the paper