The general rule is that opinion of a witness on a question whether of fact or law, is irrelevant.
However, there are some exceptions to this general rule under Indian Evidence Act, 1872. These are:
(i)Opinions of experts. (Section 45): As a general rule the opinion of a witness on a question whether of fact, or of law, is irrelevant. Witness has to state the facts which he has seen, heard or perceived, and noted the conclusion, form of observations. The functions of drawing inferences from facts is a judicial function and must be performed by the Court. However, to this general rule, there are some exceptions as indicated in Section 45. Opinions of experts are relevant upon a point of:
(a)foreign law
(b)science
(c)art
(d)identity of hand writing
(e)finger impression special knowledge of the subject matter of enquiry become relevant.
(ii)Opinion of Examiner of Electronic Evidence (Section 45A): When in a proceeding, the court has to form an opinion on any matter relating to any information transmitted or stored in any computer resource or any other electronic or digital form, the opinion of the Examiner of Electronic Evidence referred to in Section 79A of the Information Technology Act, 2000, is a relevant fact.
Explanation- For the purposes of this section, an Examiner of Electronic Evidence shall be an expert.
(iii)Facts which support or are inconsistent with the opinions of experts are also made relevant.
(Section 46): The Facts which are not otherwise relevant becomes relevant if they support or are inconsistent with the opinions of experts, when such opinions are relevant.
(iv)Others: In addition to the opinions of experts, opinion of any other person is also relevant in the following cases:
(a)Opinion as to the handwriting of a person if the person giving the opinion is acquainted with the handwriting of the person in question; (Section 47)
(b)Opinion as to the electronic/digital signature of any person, the opinion of the Certifying Authority which has issued the electronic/digital signature certificate; (Section 47A)
(c)Opinion as to the existence of any general right or custom if the person giving the opinion is likely to be aware of the existence of such right or custom; (Section 48)
(d)Opinion as to usages etc. words and terms used in particular districts, if the person has special means of knowledge on the subject; (Section 49)
(e)Opinion expressed by conduct as the existence of any relationship by persons having special means of knowledge on the subject. (Section 50)
Alternate Answer
The general rule is that opinion of a witness on a question whether of fact or law, is irrelevant.
However, there are some exceptions to this general rule under Bharatiya Sakshya Adhiniyam, 2023.
These are:
(i)Opinions of experts. (Section 39(1)): As a general rule the opinion of a witness on a question whether of fact, or of law, is irrelevant. Witness has to state the facts which he has seen, heard or perceived, and noted the conclusion, form of observations. The functions of drawing inferences from facts is a judicial function and must be performed by the Court. However, to this general rule, there are some exceptions as indicated in Section 39(1). Opinions of experts are relevant upon a point of:
(a)foreign law
(b)science
(c)art
(d)identity of hand writing
(e)finger impression special knowledge of the subject matter of enquiry become relevant.
(f)or any other field
(ii)Opinion of Examiner of Electronic Evidence (Section 39(2)): When in a proceeding, the court has to form an opinion on any matter relating to any information transmitted or stored in any computer resource or any other electronic or digital form, the opinion of the Examiner of Electronic Evidence referred to in Section 79A of the Information Technology Act, 2000, is a relevant fact.
Explanation- For the purposes of this section, an Examiner of Electronic Evidence shall be an expert.
(iii)Facts which support or are inconsistent with the opinions of experts are also made relevant.
(Section 40): The Facts which are not otherwise relevant becomes relevant if they support or are inconsistent with the opinions of experts, when such opinions are relevant.
(iv)Others: In addition to the opinions of experts, opinion of any other person is also relevant in the following cases:
(a)Opinion as to the handwriting and signature of a person if the person giving the opinion is acquainted with the handwriting of the person in question; (Section 41(1))
(b)Opinion as to the electronic/digital signature of any person, the opinion of the Certifying Authority which has issued the electronic/digital signature certificate; (Section 41(2))
(c)Opinion as to the existence of any general right or custom if the person giving the opinion is likely to be aware of the existence of such right or custom; (Section 42)
(d)Opinion as to usages etc. words and terms used in particular districts, if the person has special means of knowledge on the subject; (Section 43)
(e)Opinion expressed by conduct as the existence of any relationship by persons having special means of knowledge on the subject. (Section 44)
Source: ICSI Guideline Answers, December 2024, Q. 4A(iii) (Syllabus 2022).