Choose the correct option . If `underset(n)(T)` and `underset(m)(T)` denotes the half-value period and the mean-value period , respectively of a radioactive element.

Options

A. `underset(n)(T)` = `underset(m)(T)`
B. `underset(n)(T)` gt `underset(m)(T)`
C. `underset(n)(T)` lt `underset(m)(T)`
D. `underset(b)(T)`` ge` `underset(m)(T)`

Answer

C

Explanation

We have , `T_(a)` = 0.693 / `lambda`
`T_(m)` = 1 / `lambda` or `T_(n)` = 0.693`T_(m)`
`therefore` `T_(n) lt T_(m)`