JAMB - Physics (2016 - No. 25)
A radioactive isotope has a decay constant of 10\(^{-6}\)s\(^{-1}\). Calculate its half-life.
5.93 x 106s
6.93 x 105s
6.93 x 109s
5.93 x 107s
Explication
t\(_{1/2}\) = \(\frac{0.693}{\gamma}\) = \(\frac{0.693}{10^{-6}}\)
= 6.93 x 10\(^5\)
= 6.93 x 10\(^5\)