The half life of a radioactive nuclide is

1. Half the time needed for a sample to complete decay.
2. Half the time a sample can be kept before it starts to decay.
3. The time needed for half a sample to decay.
4. The time needed for the rest of a sample to decay one half of it has already decayed.

Solution

Asked in: AP EAMCET 2022 (06 Jul Shift 1)

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