what is theory of relativity?

Such questions are generally not the 'Cup of Tea" of https://Shiksha.com. It is a purely technical question and not related to the mission what https://shiksha.com has. So please refrain from asking such questions on this forum. If you have some creative ideas pertaining to such technical topics you

Very well said Nikhileshji. Had i not read your post, I'd have explained the two concepts. Thanks, Gomti

Theory of Relativity, which essentially deals with the question of whether rest and motion are relative or absolute, and with the consequences of Einsteins conjecture that they are relative.