1 Average life of radioactive substance X for a and B emissions is 1600 years and 400 years respectively X Y 1 1 4 3 31 2 The

Question

1 Average life of radioactive substance X for a and B emissions is 1600 years and 400 years respectively X Y 1 1 4 3 31 2 The ratio of no of two Z B nuclide Y and Z at time t is 2 4 1 4 42 1

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