Radioactivity – 1

1. Plutonium decays with half life time 24000 years. If Plutonium is stored after 72000 years, the fraction of it that remain :

(a) 1/2
(b) 1/4
(c) 1/8
(d) 1/12

Answer : (c)

Explanation : No answer description available for this question. Let us discuss.

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