Four different radioactive elements are kept in separate containers. In the begining the container A has 200 g-atom with half-life of 2 days , B has 20 g-atom with half-life of 20 days, C has 2g-atom with half-life 200 days and D has 100g-atoms with half-life of 10 days. In the begining the maximum activity exhibited by the container is

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answer is A.

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Detailed Solution

The activity of radioactive element is given by $R = λN = \frac{0 .6931 N}{T} Thus, R \propto \frac{N}{T}$ . The value of N/T is largest for the element in the container A.

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