A) 92.15%
B) 87.5%
C) 47%
D) 18.5%
Correct Answer: B
Solution :
Remaining quantity \[N={{N}_{0}}{{\left( \frac{1}{2} \right)}^{t/{{t}_{1/2}}}}\] \[{{N}_{0}}{{\left( \frac{1}{2} \right)}^{90/30}}\] \[N=\frac{{{N}_{0}}}{8}\] Decayed amount \[={{N}_{0}}\frac{{{N}_{0}}}{8}\] \[=\frac{7{{N}_{0}}}{8}=\frac{7}{8}\times \]100=87.5%You need to login to perform this action.
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