The decay constants of a radioactive substance for a and b emission are `lambda_(a)` and `lambda_(b)` respectively. If the substance emits `alpha` and `beta` simultaneously, the average half life of the material will be -

The decay constant of a radioactive substance for a and beta emission are lambda_(a) and lambda_(beta) respectively. It the substance emits a and beta simultaneously, the average half life of the material will be_______

The decay constant of a radioactive substance for a and beta emission are lambda_(a) and lambda_(beta) respectively. It the substance emits a and beta simultaneously, the average half life of the material will be_______

The decay constants of a radioactive substance for alpha and beta emission are lambda_(alpha) and lambda_(beta) respectively. If the substance emits alpha and beta simultaneously, then the average half life of the material will be

The decay constant of a radioactive sample is lambda . The half-life and mean life of the sample respectively are

The decay constant of a radioactive sample is 'lambda' . The half-life and mean life of the sample are respectively

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively