A radioactive nucleus has a decay constant λ and its radioactive daughter nucleus has a decay constant 10λ. At time t = 0, N0 is the number of parent nuclei and there are no daughter nuclei present. N1(t) and N2(t) are the number of parent and nuclei present at time t, respectively. The ratio N2(t)/N1(t) is
1
\(\frac{1}{9}\left[1-e^{-9 \lambda t}\right] \\\)
2
\(\frac{1}{10}\left[1-e^{-10 \lambda t}\right] \\\)
3
[1 - e-10λt]
4
[1 - e-9λt]
5
Question Not Attempted