Exam-style question
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What is the relationship between activity (A) and decay constant (λ) in radioactive decay?.
- A.A = λN
- B.A = N/λ
- C.A = λ^2N
- D.A = N^2/λ
Model answer
What a good answer should say
- A = λN
Explanation
Why this works
The formula A = λN shows that the activity (A) of a radioactive sample is directly proportional to the decay constant (λ) and the number of undecayed nuclei (N). This relationship is fundamental in understanding how quickly a radioactive substance decays.
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