NEET Physics Nuclei Questions Solved

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PMT - 1999
The half-life of radium is 1622 years. How long will i take for seven eighths of a given amount of radium to decay (A) 3244 years(B) 6488 years (C) 4866 years(D) 811 years (Raj. PMT 1999; AIEEEE 2004)

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