Question

    A sample contains equal numbers of two isotopes X and Y,

    each with half-lives of 10 days and 20 days respectively. What is the ratio of activities Aₓ : Aᵧ after 20 days?
    A 1:8 Correct Answer Incorrect Answer
    B 1:4 Correct Answer Incorrect Answer
    C 1:1 Correct Answer Incorrect Answer
    D 1:2 Correct Answer Incorrect Answer

    Solution

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