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Get Answers to all your Questions
Which of the following is not a practical unit of length?
Option: 1
Metre
Option: 2
Foot
Option: 3
Yard
Option: 4
kilogram
Answers (1)
The practical unit of length in the International System of Units (SI) is the metre (a). The metre is defined as the length of the path travelled by light in a vacuum during a time interval of 1/299,792,458 of a second.
The foot (b) and yard (c) are practical units of length in the US customary system. The foot is defined as 0.3048 metres, and the yard is defined as 3 feet or 0.9144 metres.
The kilogram(d) is not a practical unit of length in the International System of Units (SI).
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