What is the half-time of a radioactive sample (in minutes), if its mean life is 200 s?
Correct answer: D. 2.31 min
- A. 0.69 min
- B. 2 min
- C. 2.57 min
- D. 2.31 min
Explanation
If you multiply the average lifetime by the natural logarithm of 2 (the number 0.6931), you get the half-life
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