JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Units

  • question_answer
    One second is equal to [MNR 1986]

    A) 1650763.73 time periods of \[Kr\] clock

    B) 652189.63 time periods of \[Kr\] clock

    C) 1650763.73 time periods of \[Cs\] clock

    D) 9192631770 time periods of \[Cs\] clock

    Correct Answer: D

    Solution :

    It is by standard definition.


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