Define the term 'activity' of radionuclide. Write its SI unit. - Vidyadip

Question

Define the term 'activity' of radionuclide. Write its SI unit.

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Answer

The total decay rate of a sample of one or more radionuclide is called activity.Alternate Answer
Radioactive disintegration taking place per second.Alternate Answer
$\text{R} = - \frac{\text{dN}}{\text{dt}} , $where N is the total number of radionuclides at any time ‘t’. SI unit-becquerel(Bq) .

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