Physics - Modern Physics Question with Solution | TestHub

Given:$N_1=2.N_2$

Now, activity$A_1={\lambda }_1{N}_1=5\mu C_i$.....(1)

and$A_2={\lambda }_2{N}_2=10\mu C_i$.....(2)

Dividing$\frac{\left(1\right)}{\left(2\right)}$we get

$\frac{{\lambda }_1}{{\lambda }_2}.\frac{N_1}{N_2}=\frac{5}{10}$

$\Rightarrow \frac{t_2}{t_1}.2=\frac{1}{2}\Rightarrow \frac{t_1}{t_2}=\frac{4}{1}$