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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2002

  • question_answer
    In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during one mean life?

    A)  63%                                      

    B) \[69.3%\]

    C)  37%                                      

    D)  50%

    Correct Answer: B

    Solution :

    Number of photo electrons emitted will be \[\text{1/4}\,\text{th}\]as previous.


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