A radioactive nuclide can decay simultaneously by two different processes which have decay constants λ1 and λ2. The effective decay constant of the nuclide is λ.
(a) λ = λ1 + λ2
(b) λ = 1/2 ( λ1 + λ2)
(c) 1/λ = 1/λ1 + 1/λ2
(d) λ = √(λ1λ2)
Correct Answer is; (a) λ = λ1 + λ2
