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Article History

Received: 15 September 2022

Accepted: 20 January 2023

First Online: 14 February 2023

Declarations

:

: The authors declare no conflicts of interest.

: This study was approved by the Scientific Committee of the Department of Physics, Higher Teacher Training College Bambili, The University of Bamenda, P. O. Box 39, Bambili-Cameroon.

: No informed concerned because experimental data were used, with the sources properly cited.