Question:medium

The half-life of a radioactive substance is 10 days. After 30 days, fraction remaining is:

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1 $\rightarrow$ 1/2 (10 days) $\rightarrow$ 1/4 (20 days) $\rightarrow$ 1/8 (30 days).

Updated On: May 10, 2026

1/4
1/8
1/2
1/16

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The Correct Option is B

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