Question

what is SI
system of unit ? Explain its type​

Answer 1

Answer:

luminous efficacy of 540 THz radiation. 683 lm/W. The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.

Explanation:

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Answer 2

Answer:

SI means standard internatinal

its example are SI unit of weight is kg(kilogram)