The university said in a press release that the blaze erupted yesterday and the fire and rescue services personnel put out the flames.
The fire was reportedly caused by an electrical short-circuit and damaged the answer-scripts, it said.
Assistant commissioner of police Ch Laxminarayana told PTI that the damaged answer-scripts were those of BSc semester examination.
Preliminary investigation revealed that the cause of the fire was the electrical short-circuit, the police official said, adding "It was an accidental fire."
The university said it has constituted a committee to inquire into the fire to assess the extent of damage and submit a report in two days.