Units and Measurements

Question: One second is equal to



1) 1650763.73 time periods of \[Kr\] clock
2) 652189.63 time periods of \[Kr\] clock
3) 1650763.73 time periods of \[Cs\] clock
4) 9192631770 time periods of \[Cs\] clock
Solution: Explanation: explanation
units

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