There is a difference between relevancy and admissibility of evidence. They are not co-extensive or interchangeable terms. All facts logically relevant are not however legally relevant. Relevancy under this act is not a question of pure logic but of law, as no fact however logically relevant is receivable in evidence unless it is declared by the Act to be relevant. In this project, we analyze the meaning and relation logically relevant and legally relevant part of relevancy and the manner in which it can be differentiated from admissibility. If one fact is connected to the other logically, it is called logical relevancy and it may be based on several factors. For instance if a severed dead body is found on a railway track, it can be inferred that the death occurred because of the train running over the person.