A) \[2900\text{ }years\]
B) \[5800\text{ }years\]
C) \[11600\text{ }years\]
D) \[23200\text{ }years\]
Correct Answer: C
Solution :
\[25g\xrightarrow{{{T}_{1/2}}}12.5g\xrightarrow{{{T}_{1/2}}}6.25g.\] After two half lives the sample will reduce at\[6.25\text{ }g\]. \[\Rightarrow \] So time taken \[t=\frac{2\pi }{2}\] \[=2\times 5800=11600%\]You need to login to perform this action.
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