Additional Sessions Judge Gautam Manan also imposed a fine of Rs 5,000 on Uttar Pradesh resident Rohit who was convicted for committing the offence in 2013.
"Forensic evidence lends support to the version of the victim and establishes that accused had sexually assaulted the victim," the judge said.
"Testimony of victim is found to be truthful and consistent in material particulars," the judge added.
The court also asked the Delhi State Legal Services Authority to pay Rs three lakh as compensation to the family of the victim as restorative and compensatory justice.
More From This Section
According to the prosecution, the accused assaulted the girl when she went to the first floor of a factory where she was residing with her family near Narela in north Delhi. It was alleged that he pushed her into a room and raped her.
The accused denied all the allegations and claimed he was falsely implicated in the case.
The court relied up on the forensic evidence to establish sexual assault and noted that the victim's stand was consistent throughout the trial.