The amount of a radioactive material (having a half life... — Answer & Explanation | PrepBeePakistan

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HomeMCQsChemical Engineering

MEDIUMENGLISHChemical Engineering

The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be ______________ of its original weight?

Correct answer: D

Explanation

The number of half-lives is 400 years / 100 years = 4. The remaining fraction is (1/2)^4, which equals 1/16.

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