Affiliation: | 1. Department of ECE, University College of Engineering, Nagercoil - 629004, Tamilnadu, India;2. Department of Physics, Annapoorana Engineering College, Salem, Tamilnadu, India;3. Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India;4. Department of Physics, Government Arts College, Salem, Tamilnadu, India;5. Department of Physics, University College of Engineering, Nagercoil - 629004, Tamilnadu, India |