Radioactive material A has decay constant 8λ and material B has decay constant λ. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material B to that A will be 1/e
A. 1/λ
B. 1/7λ
C. 1/8λ
D. 1/9λ
Answer:B
Radioactive material A has decay constant 8λ and material B has decay constant λ. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material B to that A will be 1/e
A. 1/λ B. 1/7λ C. 1/8λ D. 1/9λ