In which subject did Dr. Bhabendra Nath Saikia, famous novelist and film director of Assam, obtain PhD from University of London?

The correct answer is option 2 , i.e. Physics . Bhabendra Nath Saikia was a novelist, short-story writer and film director from Assam, India. He won many literary awards, including Sahitya Academy in 1976 , and was also recognised with the Padma Shri in 2001. He obtained his PhD in Physics from the University of London in 1961. He died on 13 August 2003 in Guwahati, Assam, India. The Assam Government has named a state award in his honour.