Problem

The half-life period of a radioactive element

x

is same as the mean life time of another radioactive element

y

. Initially, both of them have the same number of atoms. Then, (JEE 1999) a.

x

and

y

have the same decay rate initially b.

x

and

y

decay at the same rate always c.

y

will decay at a faster rate than

x

x

will decay at a faster rate than

y