How many atoms decay in one mean life time of a radioactive sample-

In a mean life of a radioactive sample

In a mean life of a radioactive sample

In a mean life of a radioactive sample

Calculate the ratio of half-life to the mean life of a radioactive sample . If lambda be the decay constant of a radioactive sample.

The probability that a certain radioactive atom would get disintegrated in a time equal to the mean life of the radioactive sample is

The probaility that a certaun radioactive atom would get disintefrated in a time equal to the mean life fo the radioactive sample is

The probaility that a certaun radioactive atom would get disintefrated in a time equal to the mean life fo the radioactive sample is

The half - life period of radioactive element A is the same as the mean life time of another radioactive element B. Initially both of them have same number of atoms. The radioactive element B decays faster than A. Explain, why.