Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan;
Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan;
Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan;
Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan;
Department of Statistics, University of Peshwar, Pakistan;
Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan;
