Additional District and Sessions Judge (ADJ) Mohammad Ijajuddin sentenced Hasantara Khatoon and her male friend Adil after convicting them for murdering the woman's husband.
The court also imposed a fine of Rs 65,000 on each of the duo.
As per the prosecution, one Sabir Ali was killed on April 19, 2012 by his wife Hasantara and her accomplice Adil, who had then concealed the body in a tank.