Define the activity of a radio nuclide. ...

Define the activity of a radio nuclide. Write its S.I. unit. Give a plot of the activity of a radioactive species versus time.
How long will a radioactive isotope, whose half life is T years, take for its activity to reduce to `1//8`th of its initial value ?

A

T

B

`T//2`

C

`T//3`

D

3T

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The correct Answer is:

D

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