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 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 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 -

lambda_(alpha)/lambda_(beta) in Balmer series is

The mean lives of a radioactive substance are T^(1) and T^(2) for alpha- emission and beta- emission respectively. If it is decaying by both beta- emission and beta - emission simultaneously then find its mean life and decay constant ?

The mean lives of a radioactive material for alpha and beta radiations are 1620 and 520 years respectively . The material decays simultaneously for alpha and beta radiations. The time after which one fourth of the material remains undecayed in -

Half lives for alpha and beta emission of a radioacative materila are 16 years and 48 years respectively. When material decays giving alpha and beta emission simultaneously, time in which 3//4^(th) material decays is .

Half lives for alpha and beta emission of a radioacative materila are 16 years and 48 years respectively. When material decays giving alpha and beta emission simultaneously, time in which 3//4^(th) material decays is .