A) 1.414 gm
B) 2.428 gm
C) 3.442 gm
D) 4.456 gm
Correct Answer: A
Solution :
\[{{N}_{t}}={{N}_{o}}{{\left( \frac{1}{2} \right)}^{2}}\][\[\therefore {{t}_{1/2}}\]= 22 years, T = 11 years, \[{{N}_{o}}\]=2, \[{{N}_{t}}\]=?] \[T={{t}_{1/2}}\times n,\] 11= 2 × n or \[n=\frac{11}{22}=\frac{1}{2}\] \[\therefore {{N}_{t}}=2gm\times {{\left( \frac{1}{2} \right)}^{1/2}}=1.414gm\].You need to login to perform this action.
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