JEE PHYSICS MCQ: NUCLEI

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For radioactive material, the half-life is 10 minutes. If initially, there are 600 number of nuclei, the me taken (in minutes) for the disintegration of 450 nuclei is :

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Correct option: A

Option A (20) is correct because after 2 half-lives, 450 nuclei will have disintegrated from an initial 600.

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