1) for valid marriage under provisions of Hindu marriage act it is necessary that both parties are Hindus
2) if wife has not converted into Hinduism marriage would be void
3) you can file petition for declaration that marriage is a nullify
4) According to the Preamble to the Hindu Marriage Act, 1955: “An Act to amend and codify the law relating to marriage among Hindus. Section 5 of the Act makes it clear that a marriage may be solemnised between any two Hindus if the conditions contained in the said Section were fulfilled. In other words, in the event the conditions remain unfulfilled, a marriage between two Hindus could not be solemnised.”
the SC has held that marriage between hindu and person professing another faith solemnised under hindu custms was a nullity