A radioactive sample decays by $63 \%$ of its initial value in 10 s. It would have decayed by $50 \%

Question

A radioactive sample decays by $63 \%$ of its initial value in 10 s. It would have decayed by $50 \%$ of its initial value in

Professor PC Thomas Classes · Answer

$\quad T_{1 / 2}=0.693 T_{a v}=0.693(10) \approx 7 \mathrm{~s}$