1. Department of Physics, Moulana Azad College, 8, Rafi Ahmed Kidwai Road, Kolkata–700013, India
2. Beramara Ramchandrapur High School, South 24-Pgs, 743609 (WB), India
3. West Kodalia Adarsha Siksha Sadan, New Barrackpore, Kolkata–700131, India
4. Physics and Applied Mathematics Unit (PAMU), Indian Statistical Institute, Kolkata–700108, India
5. Department of Physics, Raghunathpur College, Raghunathpur–723133, Purulia, India