Q.

A radio active sample has a half life T. What fraction of initial number of active nuclei will decay in a time t=T2?

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Detailed Solution

After time +T2NN0=1(2)T2T=12∴ Required fraction =N0−NN0=(1−12)
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A radio active sample has a half life T. What fraction of initial number of active nuclei will decay in a time t=T2?