Research programmes leading to the degree of Doctor of Philosophy (Ph. D.) are available in all academic Departments and Centres of the Institute. New students are admitted in Ph.D. programme in every semester of an Academic session. The Ph.D. thesis of any student is evaluated by three external examiners. If any two of the three examiners recommend acceptance of the thesis, the student is asked to defend his/her thesis in his viva-voce examination, in front of the Oral Defense Committee (ODC). The recommendations of the Oral Defense Committee are considered by the Senate, which approves the award of Ph.D. degree to the student.