What is the error in a reproduction of wavelength standard? – McqOptions

MCQOPTIONS

1.	What is the error in a reproduction of wavelength standard?
A.	1 part in 100 million
B.	2 parts in 50 million
C.	2 parts in 50 million
D.	1 part in 50 million
Answer» B. 2 parts in 50 million

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