Question

A radioactive nucleus can decay by two different processes. The half life for the first process is 2t and that for the second process is t. The effective disintegration constant of nucleus is

• A. $\frac{3}{2tln2}$
• B. $\frac{3ln2}{2t}$
• C. $\frac{ln2}{3t}$
• D. $\frac{3ln2}{t}$

Answer 1

Answer: (B)

$\frac{3ln2}{2t}$

Answer 2

$\lambda = \lambda_1 + \lambda_2$