The half-life period and the mean life period of a radioactive element are denoted respectively by Th and Tm. Then

Question

The half-life period and the mean life period of a radioactive element are denoted respectively by Th and Tm. Then (A) Th=Tm (B) Th > Tm (C) Th < Tm (D) Th ge Tm

Tardigrade Admin · Accepted Answer

Half life, Th=(0.693/λ), Tm=(1/λ) Cleamrly, Th < Tm.

Q. The half-life period and the mean life period of a radioactive element are denoted respectively by $T_{h}$ and $T_{m}$ . Then

$T_{h} = T_{m}$

$T_{h} > T_{m}$

$T_{h} < T_{m}$

$T_{h} \geq T_{m}$

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

Q. The half-life period and the mean life period of a radioactive element are denoted respectively by Th​ and Tm​. Then

Th​=Tm​

Th​>Tm​

Th​<Tm​

Th​≥Tm​