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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 18 - Atoms and Nuclei > A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is

A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is

A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693 the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is