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Question
It has long been an objective in metrology to define the kilogram in terms of a fundamental constant, in the same way that the ____________________ is now defined in terms of the speed of light.
It has long been an objective in metrology to define the kilogram in terms of a fundamental constant, in the same way that the ____________________ is now defined in terms of the speed of light.
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Solution
The correct option is B metre
Metre is the SI unit used for measuring the distance which is defined taking speed of light as a reference.
Metre is the SI unit used for measuring the distance which is defined taking speed of light as a reference.
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