A) 32 days
B) 8 days
C) 64 days
D) 28 days
Correct Answer: D
Solution :
\[N={{N}_{0}}{{\left( \frac{1}{2} \right)}^{\frac{t}{T}}}\Rightarrow \frac{{{N}_{0}}}{4}={{N}_{0}}{{\left( \frac{1}{2} \right)}^{\frac{16}{T}}}\]\[\Rightarrow T=8\]days.
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