Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be :

a) |
9 : 8 |
b) |
3 : 8 |

c) |
8 : 1 |
d) |
1 : 8 |

Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be :

a) |
9 : 8 |
b) |
3 : 8 |

c) |
8 : 1 |
d) |
1 : 8 |

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