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The half lives of radioactive elements X...

The half lives of radioactive elements `X` and `Y` are `3` minute and `27` minute respectively. If the activities of both are same, then calculate the ratio of number of atoms of X and Y.

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The half lives of radioactive elements X and Y are 3 mintue and 27 minute respectively. If the activities of both are same, then calculate the ratio of number of atoms of X and Y.

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  • Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be

    A
    `1 : 4`
    B
    `5 : 4 `
    C
    `1 : 16`
    D
    `4 : 1`

  • Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be :

    A
    `4:1`
    B
    `1:4`
    C
    `5:4`
    D
    `1:16`

  • Two radioactive elements X and Y half-live pf 50 and 100 minute respectiv ely. Intial sample of both the elements have same number of atoms. The ratio of the reamaining number of atoms of X and Y after 20 minute is:

    A
    `2`
    B
    `1//2`
    C
    `4`
    D
    `1//4`
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