Q. If half-life of a radioactive atom is $2.3\ days$, then its decay constant would be
A) 0.1
B) 0.2
C) 0.3
D) 2.3
Explanation
(c) $\lambda = \frac{0.693}{T_{1/2}} = \frac{0.693}{2.3} = 0.3$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.