The Evidence Act 1872 was replaced by the BSA 2023 (in force 2024-07-01); no verified section mapping on file for Section 51 — confirm the corresponding provision (savings: Section 170, BSA 2023).
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.