"The activists are opposed to Rani Durgawati University's invitation to Yadav alleging that the name of his OSD Dhanraj Yadav has figured in the state Professional Examination Board (PEB) scam," ASP Amrendra Singh told reporters.
However, the OSD has already resigned from his post soon after his name cropped up.
Singh said police used only "mild lathicharge" so as to disperse the gathering before the Governor's arrival at the scene and 40 students were taken into custody.
He claimed four students sustained injuries in the police action. However, police denied the charge.