nullify

Yes, you can file for the nullity, based on the grounds of impotency and concelment of the fact. Also file the petition for condonation of delay since 2 years have passed

can u prove that this was not disclosed to you before marriage? if definitely yes then go ahead. do file a civil and one criminal case of fraud against her and seek damages and sentence for wife and her family .

in bet why did u not file case within one year of discovery of fraud, that may be a real problem for you as this is too long period( should be less than one year as per hma