MCQ
A certain radioactive material can undergo three different types of decay, each with a different decay constant $\lambda_1$, $\lambda_2$ and $\lambda_3$ . Then the effective decay constant is
- A$\lambda_{eff} =\frac{\lambda_1+\lambda_2+\lambda_3}{3}$
- B$\frac{1}{\lambda_{eff}}=\frac{1}{\lambda_{1}}+\frac{1}{\lambda_{2}}+\frac{1}{\lambda_{3}}$
- ✓$\lambda_{eff} =\lambda_1+\lambda_2+\lambda_3$
- D$\frac{1}{\lambda_{eff}}=\frac{1}{3}(\frac{1}{\lambda_{1}}+\frac{1}{\lambda_{2}}+\frac{1}{\lambda_{3})}$
