MHT CET · Physics · Nuclear Physics
A radio active element has rate of disintegration 8000 disintegrations per minute at a particular instant. After four minutes it becomes 2000 disintegrations per minute. The decay constant per minute is
- A \(0.8 \log _e 2\)
- B \(0.6 \log _e 2\)
- C \(0.5 \log _e 2\)
- D \(0 \cdot 2 \log _e 2\)
Answer & Solution
Correct Answer
(C) \(0.5 \log _e 2\)
Step-by-step Solution
Detailed explanation
\(R = R_0 e^{-\lambda t}\) \(2000 = 8000 e^{-\lambda \cdot 4}\)
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