Wife did 2nd marriage without divorce and have mariage certificate
Question 1] whats sections I can file on her 2nd husband
Question 2] whats sections I can file on my wife
That is Polyandary my dear and that is offence under indian penal code. If you have authentic proof and could prove that she married with someone else while already being married then file the complaint instantly and let her taste the fruits of her nauseating act.