MHT CET · Physics · Nuclear Physics
A radioactive element has rate of disintegration 9000 disintegration per minute at a particular instant. After two minutes it becomes 3000 disintegration per minute. The decay constant per minute is
- A \(0.5 \log _e {}^3\)
- B \(0.2 \log _e {}^3\)
- C \(0.5 \log _e {}^2\)
- D \(0.2 \log _e {}^2\)
Answer & Solution
Correct Answer
(A) \(0.5 \log _e {}^3\)
Step-by-step Solution
Detailed explanation
\(R = R_0 e^{-\lambda t}\) \(\frac{3000}{9000} = e^{-\lambda (2)}\)
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