A) \[\frac{1}{32}\]
B) \[\frac{7}{5}\]
C) \[\frac{1}{2}\]
D) \[\frac{4}{5}\]
Correct Answer: D
Solution :
Number of half lives\[n=\frac{5}{1}=5\] Now, \[\frac{N}{{{N}_{0}}}={{\left( \frac{1}{2} \right)}^{n}}\] \[\Rightarrow \] \[\frac{N}{{{N}_{0}}}={{\left( \frac{1}{2} \right)}^{5}}=\frac{1}{32}\]
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