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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2018
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Q)

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


( A ) 20
( B ) 10
( C ) 15
( D ) 30

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