45. Whenever the opinion of any living person is relevant, the grounds on which such opinion is based are also relevant.
Illustration.
An expert may give an account of experiments performed by him for the
purpose of forming his opinion.
Bharatiya Sakshya Adhiniyam, 2023
Section 41 Opinion as to handwriting and signature, when relevant
Section 42 Opinion as to existence of general custom or right, when relevant
Section 43 Opinion as to usages, tenets, etc., when relevant
Section 44 Opinion on relationship, when relevant
Section 45 Grounds of opinion, when relevant
Section 46 In civil cases character to prove conduct imputed, irrelevant
Section 47 In criminal cases previous good character relevant
Section 48 Evidence of character or previous sexual experience not relevant in certain cases
Section 49 Previous bad character not relevant, except in reply