Question

Define SI unit? What is the Si unit of length and mass?​

Answer 1

Answer:

simple interested so units

Answer 2

Explanation:

$\mathbb{\huge{\pink{\underline{\underline{\underline{\underline{AnsWer}}}}}}}$

The meter, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s-1, where the second is defined in terms of ΔνCs. Unit of mass. kilogram. The kilogram, symbol kg, is the SI unit of mass.