| 
                        
                            | 
| Author Profile : |  |  |  | 
|  | Author : |  | Ranjan Prasad 
 |  | Current Position : |  | Research scholar ,Dept. Of Physics, B. N. Mandal University ,Madhepura. |  | Education : |  | - |  | Short Profile : |  | Ranjan Prasad is a Research scholar at Dept. Of Physics in B. N. Mandal University ,Madhepura. |  |  |  |