Section 191 of Indian Penal Code declares that when a person, who is under legal obligation, either on oath or under any provision of law, to state the truth, to declare upon any subject, knowingly makes false statement, the statement which he believes that it is false or he believes that it is not true, commits the offence under this section.

The punishment for this offence is imprisonment which may extend to Seven years, and will also be fined.

Offence under this section is a special kind of offence and FIR or private complaint cannot be made against the person who is alleged to have committed this offence. The remedy is to prefer an Application u/s 340 r/w 195 of CrPC, 1973, before the Magistrates Court having jurisdiction

Since false statement is made before family court file application before the family court

2) your lawyer will do the needful

3) there would be no negative consequences since wife has deliberately made false statement on oath

4) it is well settled law that litigant who does not come to court with clean hands is not entitled to any reliefs

Firstly you should prove before court that she has perjured the court by submitting false statements for availing wrongful gains.

After that you can file a perjury case against her in the trial court under section 340 cr.p.c.

You can file the perjury case in the same court where she has sought the maintenance amount from you on the basis of false information.

Dont worry about the negative consequences.

It is already because of negative attitude that she has dragged you to court of law, so come what may, you can proceed as decided.

Keep in touch with your lawyer on all such further issues.