The half-life of a radio-active element is 9 days, what fraction of atoms has decayed
PHYSICS
JAMB 1995
The half-life of a radio-active element is 9 days, what fraction of atoms has decayed in 36 days?
- A. \( \frac{1}{16} \)
- B. \( \frac{1}{4} \)
- C. \( \frac{1}{2} \)
- D. \( \frac{15}{16} \)
Correct Answer: D. \( \frac{15}{16} \)
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