Question

Define standard metre.​

Answer 1

Answer:

it is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

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Answer 2

Answer:

Answer:-The Standard meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. ... The Standard meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.