District and Sessions judge Ashok Kumar Vyas also imposed a fine of Rs 4,000 on Premshankar Goswami, a resident of Dolunda village under Keshoraipatan police station.
On the night of December 13, 2013, the woman sustained 90 per cent burn injuries when Premshankar poured kerosene over her and set her on fire. She died during treatment.
On a complaint by the deceased's father Ghanshyam Goswami, a case of murder was lodged against Premshankar the next day in Keshoraipatan police station, Public Prosecutor Bhupendra Sahay Saxena said.
During the trial, 24 witnesses were produced before the court.
The court also ordered a compensation of Rs 1 lakh to the father of the deceased woman and directed the department concerned to ensure proper care of her son, who was one and half years old at the time of her death.