A) 5 days
B) 15 days
C) 10 days
D) 20 days
Correct Answer: C
Solution :
T = 50 days, \[{{t}_{1/2}}\] = ?, \[{{N}_{o}}=1,N=\frac{1}{32},\] \[N={{N}_{o}}\times {{\left( \frac{1}{2} \right)}^{n}}\] or\[\frac{1}{32}=1\times {{\left( \frac{1}{2} \right)}^{n}},\] or \[{{\left( \frac{1}{2} \right)}^{5}}={{\left( \frac{1}{2} \right)}^{n}}\]or n = 5 \[T={{t}_{1/2}}\times 2\], or \[{{t}_{1/2}}=\frac{50}{5}=10\]days.
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