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As radioactive substances undergo continuous decay, number of nuclei in a sample goes on decreasing. The time interval in which number of nuclei in a sample is reduced to half of its initial value is the half-life of the sample. The half-life is related to the decay constant by the relation. T_(1//2) = (0.693)/lambda The average life of a sample is expressed by the relation tau = 1/lambdaThe decay constant of a radioactive substance having half-life 2 minutes is |
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Answer» `0.3465 MIN^(-1)` |
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