The half-life of a substance is 2 years. After 6 years, what fraction of original substance remains? MCQ with Answer and Explanation

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The half-life of a substance is 2 years. After 6 years, what fraction of original substance remains?

A. 1/8

B. 1/16

C. 1/2

D. 1/4

Answer: Option A

Solution (By JKSSB Mock Tests)

3 half-lives => 1/8.

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Correct Answer: Option D

Explanation:
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