A) 100 min
B) 10 min
C) 50 min
D) 5 min
Correct Answer: B
Solution :
\[k=\frac{2.303}{t}\,\log \,\frac{{{N}_{0}}}{N}\] \[=\frac{2.303}{23.03}\log \frac{2\times {{10}^{7}}}{2\times {{10}^{6}}}\] \[=\frac{2.303}{23.03}\log 10\] \[k=0.1\,{{\min }^{-1}}\] \[{{t}_{{\scriptstyle{}^{1}/{}_{2}}}}=\frac{0.693}{k}=\frac{0.693}{0.1}=6.93\,\,min\] average life \[(T)=1.44\times {{t}_{{\scriptstyle{}^{1}/{}_{2}}}}\] \[=1.44\times 6.93=10\,\,\min \]You need to login to perform this action.
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