What is the abbreviation of SI unit? why SI unit is necessary for various quantities? what is the S.I unit of length and what is their symbols?
Answers
Hey Mate!!
1. What is the abbreviation of SI unit?
Ans ; The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system.
Simple answer ------- SI = The International System
of units.
2. Why SI unit is necessary for various quantities?
Ans ; Having a standard unit system is important because it helps the entire world to understand the measurements in one set of unit system
Without standard units of measurement, scientists would have a huge problem understanding what other scientists were saying. After all, if I were to refer to a meter as "the length of my leg" and another scientists were to refer to it as "the length of a Saint Bernard dog", we'd have a lot of trouble when it came to do actual science. To avoid this problem, the SI system of units gives us a convenient and, more importantly, standard set of units that we can agree on.
3. What is the S.I unit of length and what is their symbols?
Ans ; 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.