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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 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. Correct Answer Both the statements are true

Comparison of end and wavelength standard does not involve any mechanical movement. Terminal surfaces of end standard can be used as optical reflectors. But in comparison of line and wavelength standard, movement like movement of carriage are involved.

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