What is SI? It´s important for me.?

Question

please tell any site telling about SI unit or where I can read physics o 10th and 11 class...

Answer 1

SI is a standard for measuring the characteristics of objects.  It is a worldwide system based on the metre, kilogram and second.  

Have a look at the site below which will give you some more info on the basis of the system and the some of the common units used in Physics

Answer 2

SI is stand for system international unit. For example, weight: kg. Distance: metre. Time: second.  

Answer 3

hi,

there are different units followed for calculations such as

System International (SI) Units i.e., Kg, degree C, m etc

British or Engineering System i.e., lb, degree F, ft etc

hope this is helpful. Bye.