JEE PHYSICS MCQ: NUCLEI

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The decay rate of sample of radioactive nuclei

{I^{128}}

after time 4 min and 36 min is 322 and 161 counts/second respectively. The half-life for this radioactive nuclide is

View answer and explanation

Correct option: B

32 min

The correct answer is 32 min. The half-life is calculated by finding the time it takes for the decay rate to halve.

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