A fresbly prepared of a radioisotope of half - life `1386 s ` has activety `10^(3) `
Channel: Doubtnut
Date: 2020-07-05

A fresbly prepared of a radioisotope of half - life `1386 s ` has activety `10^(3) ` disentegrations per second Given that in `2 = 0.693` the fraction of the initial number of nuclei (expressedin nearest integer percentage ) that will decay in the first `80 s ` after preparation of the sample is