Institution: | 1.Department of Physics, Government General Degree College at, 733131, Kushmandi, West Bengal, India ;2.Department of Physics; Jadavpur University, 700032, Kolkata, West Bengal, India ;3.Department of Mathematics, Government General Degree College at, 700032, Kushmandi, West Bengal, India ;4.Institute of Natural Science and Applied Technology, 700032, Kolkata, India ; |