Given a sample of Radium-226 having half- life of 4 days. Find the probability, a nucleus disint...

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Given a sample of Radium-226 having half- life of 4 days. Find the probability, a nucleus disintegrates after 2 half lives
[IIT-JEE 2006]
(a) 1
(b) \( 1 / 2 \)
(c) \( 1.5 \)
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