(1) If any question
put to a witness upon cross-examination relates to a matter not relevant to
the proceeding, except in so far as it affects the credit of the witness by
injuring his character, it shall be the duty of the court to decide whether or
not the witness shall be compelled to answer it, and the court may, if it
thinks fit, inform the witness that he is not obliged to answer it.
(2) In exercising this
discretion, the court shall have regard to the following considerations
—
(a) such
questions are proper if they are of such a nature that the truth of the
imputation conveyed by them would seriously affect the opinion of the court as
to the credibility of the witness on the matter to which he testifies;
(b) such
questions are improper if the imputation they convey relates to matters so
remote in time, or of such character, that the truth of the imputation would
not affect, or would affect in a slight degree only, the opinion of the court
as to the credibility of the witness on the matter to which he testifies;
(c) such
questions are improper if there is a great disproportion between the
importance of the imputation made against the witness’s character and
the importance of his evidence.
(3) Nothing herein
shall be deemed to make any witness compellable to give evidence upon any
matter he is now by law privileged from disclosing.