Q. If the decay constant of a radioactive substance is $\lambda$, then its half-life is
A) $\frac{1}{\lambda}\log_{e}$2
B) $\frac{1}{\lambda}$
C) $\lambda\ \log_{e}$2
D) $\frac{\lambda}{\log_{e}2}$
Explanation
(a) Relation between half-life and decay constant is
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ T = \ \frac{1}{\lambda}\ = \log_{e}2$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.