CUET · PHYSICS · PYQ PAPER 2025
The half-life of a given radioactive nucleus is 200 days. The mean life of this nucleus is
- A 288 days
- B 2.88 days
- C 100 days
- D 200 days
Answer & Solution
Correct Answer
(A) 288 days
Step-by-step Solution
Detailed explanation
\( \tau = \frac{T_{1/2}}{\ln(2)} \) \( \tau = \frac{200}{0.693} \) \( \tau \approx 288.6 \) days
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