1. Department of Physics, Govt. Arts and Science College, Meenchanda, Calicut, Affiliated to University of Calicut, Kerala, India + Department of Physics, MES Mampad College, Mampad P.O, Malappuram, Affiliated to University of Calicut, Kerala, India
2. Department of Physics, Govt. Arts and Science College, Meenchanda, Calicut, Affiliated to University of Calicut, Kerala, India