Question:medium
The half-life of a radioactive substance is 20 minutes. The time taken between 50% decay and 87.5% decay of the substance will be
The half-life of a radioactive substance is 20 minutes. The time taken between 50% decay and 87.5% decay of the substance will be
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You can visualize this: 100% $\rightarrow$ 50% (1st $T_{1/2}$) $\rightarrow$ 25% (2nd $T_{1/2}$) $\rightarrow$ 12.5% (3rd $T_{1/2}$). The jump from 50% remaining to 12.5% remaining clearly spans 2 half-lives.
Updated On: May 6, 2026
- 20 minutes
- 30 minutes
- 40 minutes
- 25 minutes
- 10 minutes
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The Correct Option is C
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