JEE Mains · Physics · STD 12 - 13. Nuclei
A radioactive sample decays \(\frac{7}{8}\) times its original quantity in \(15\) minutes. The half-life of the sample is \(......min\)
- A \(5\)
- B \(7.5\)
- C \(15\)
- D \(30\)
Answer & Solution
Correct Answer
(A) \(5\)
Step-by-step Solution
Detailed explanation
Remaining \(=\frac{1}{8}\) \(3 t _{1 / / 2}=15\,min\) \(t _{1 / 2}=5\,min\)
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