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NEET 2023

NEET 2023 Physics question on Atoms and Nuclei

The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to 116\dfrac{1}{16} th of its initial value?
  1. A.
    20 minutes
  2. B.
    40 minutes
  3. C.
    60 minutes
  4. D.
    80 minutes
Show answer

Correct option: D

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