The half-life of a radio-active element is 9 da... - JAMB Physics 1995 Question
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 option: d
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