Affiliation: | 1. Department of Physics, JNTU, Ananthapur, AP, India;2. Department of Physics, Rajarajeswari College of Engineering, Bangalore, India;3. Department of Physics, S K University, Ananthapur, AP, India;4. Department of Physics, Bangalore Institute of Technology, Bangalore, India;5. Department of Physics, Ghousia College of Engineering, Bangalore, India |