GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be ____ days.
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10
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20
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30
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40
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Explanation:
Detailed explanation-1: -Solution: Half life period of a radioisotopes, t1/2=20sec. ∴Nt=0.00312 g(or)3.12 mg.
Detailed explanation-2: -Radioactive half-life is the time required for a quantity of a radioisotope to decay by half. If the half-life of an isotope is relatively short, e.g. a few hours, most of the radioactivity will be gone in a few days.
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