Jul 2018, Vol. 44, No.2 January 1, 2024 August 8, 2024 Perceived Factors in Professional Obsolescence:A Qualitative Exploration of a Government Research and Development(R & D) Organization Page No., 335-344. Ajay K. Singh*, Aritra Mukherjee** & Rajinder Kumar*** Institute of Nuclear Medicine and Allied Sciences, Delhi, University of Delhi** & National Institute of Technology, Kurukshetra***