Which of the following is the most suitable for wavelength standard? – McqOptions

MCQOPTIONS

1.	Which of the following is the most suitable for wavelength standard?
A.	Cadmium 114
B.	Krypton 86
C.	Mercury 198
D.	Any monochromatic light
Answer» C. Mercury 198

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What is the path difference between interference fringes, when krypton 86 is used?
Which of the following is not an advantage of gas laser?
Which colour radiation of krypton 86 is selected for measurement?
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What is the error in a reproduction of wavelength standard?
Which of the following is not correct about wavelength standard?