Physics · Atoms and Nuclei
Radioactive material 'A' has decay constant 8λ and material 'B' has decay constant λ. Initially they have the same number of nuclei. After what time will the ratio of the number of nuclei of material 'B' to that of material 'A' be 'e'?
- 118λ
- 217λ✓
- 31λ
- 419λ
Correct answer
17λ
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