Q. 11

In one average-li A. half the active nuclei decay.

B. less than half the active nuclei decay.

C. more than half the active nuclei decay.

D. all the nuclei decay.

Answer :

The correct answer is (c). This is because, the formula for average life calculation is,



So the decay will be more than half as dividing the half-life with 0.693 will give the result to be more than half of the active nuclei will decay.

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