Section 53A(1) in The Code of Criminal Procedure, 1973
(1)When a person is arrested on a charge of committing an offence of rape or an attempt to commit rape and there are reasonable grounds for believing that an examination of his person will afford evidence as to the commission of such offence, it shall be lawful for a registered medical petitioner employed in a hospital run by the government or by the local authority and in the absence of such a petitioner within the radius of sixteen km. from the place where the offence has been committed, by any other registered medical practitioner acting at the request of a police officers not below the rank of a sub-inspector, and for any person acting in good faith in his aid and under his direction, to make such and examination of the arrested person and to use such force as is reasonably necessary for that purpose.
