Question

The half-life period and the mean life period of a radioactive element are denoted respectively by $T_h$ and $T_m$. Then

• A. $T_h=T_m$
• B. $T_h > T_m$
• C. $T_h < T_m$
• D. $T_{h} \ge T_{m}$

Answer 1

Answer: (C)

$T_h < T_m$

Answer 2

Half life, $T_{h}=\frac{0.693}{\lambda}, T_{m}=\frac{1}{\lambda}$
Cleamrly, $T_{h} < T_{m}.$