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VOLUME 9,ISSUE 11,November,2022


Author Names : Joydip Ghosh1 and Sangam Kumar2* 1P.G. Department of Physics, R.D.S. College, B. R. A. Bihar University, Muzaffarpur-842002, India 2*P. G. Department of Physics, L. S. College, B. R. A. Bihar University, Muzaffarpur-842001, India E-mail:* kumarsangam.p[email protected]