Q. Which is the correct expression for half-life
A) $(t)_{1/2} = \log 2$
B) $(t)_{1/2} = \frac{\lambda}{\log 2}$
C) $(t)_{1/2} = \frac{\lambda}{\log 2}(2.303)$
D) $(t)_{1/2} = \frac{2.303\log 2}{\lambda}$
Explanation
(d) $T_{1/2} = \frac{\log_{e}2}{\lambda} = \frac{2.303\log_{10}2}{\lambda}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.