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NEET · Physics · STD 12 - 13. Nuclei
The half-life of a radioactive substance is \(30\) minutes. The times (in minutes ) taken between \(40\%\) decay and \(85\%\) decay of the same radioactive substance is
- A \(45\)
- B \(60\)
- C \(15\)
- D \(30\)
Answer & Solution
Correct Answer
(B) \(60\)
Step-by-step Solution
Detailed explanation
\(N_{0}=\) Nuclei at time \(t=0\) \(N_{\mathrm{1}}=\) Remaining nuclei after \(40 \%\) decay
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