An isotope’s half-life is $6000$ years. How long does it take for the count rate from a sample of the isotope to fall to $\frac{1}{16}$ of its starting value?
- A$6000$ years
- B$18\,000$ years
- C$24\,000$ years
- D$96\,000$ years
Physics 5054 · O Level · Half-life