1. Department of Physics; Mahatma Phule Arts, Commerce and S.R.C. Science Mahavidyalaya; Warud 444906 Dist. Amravati, MS India
2. Department of Physics; Sant Gadge Baba Amravati University; Amravati MS 444602 India
3. Department of Physics; Siddharth College of Arts, Science and Commerce, Fort; Mumbai (MS) 440001 India
4. Department of Physics; D. K. Marathe and N. G. Acharya College, Chembur; Mumbai MS 440071 India