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PhysicsNEET 2021Radioactivity and decay law

Nuclei

The half-life of a radioactive nuclide is 100 hours. The fraction of the original activity that will remain after 150 hours would be:

  1. A.12\dfrac12
  2. B.122\dfrac{1}{2\sqrt2}✓
  3. C.23\dfrac23
  4. D.232\dfrac{2}{3\sqrt2}

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