Physics And Measurement Question 309

Question: One second is equal to

[MNR 1986]

Options:

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

Show Answer

Answer:

Correct Answer: D

Solution:

It is by standard definition.



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