Which of the following is not correct about wavelength standard? – McqOptions

MCQOPTIONS

1.	Which of the following is not correct about wavelength standard?
A.	Wavelength of monochromatic light is an invariable unit of length
B.	Wavelength standard is a physical standard
C.	It is a reproducible standard
D.	It is a natural unit of length
Answer» C. It is a reproducible standard

Discussion

No Comment Found

Related MCQs

Which of the following option is correct about wavelength standard?
Which of the following option is correct for the given statements?Statement 1: End and wavelength standards can be compared without any mechanical movement.Statement 2: Indirect comparison of line standard and wavelength standard involves movement.
Which of the following option is correct for given statements about wavelength standard?Statement 1: Gas lasers produce 1000 times more intense light than others.Statement 2: Lasers cannot be used for some interferometers like Pitter-NPL gauge interferometer.
WHICH_OF_THE_FOLLOWING_OPTION_IS_CORRECT_ABOUT_WAVELENGTH_STANDARD??$
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?
Which of the following is the most suitable for wavelength standard?
What is the error in a reproduction of wavelength standard?
Which of the following is not correct about wavelength standard?