KIBU2022-08-232022-08-232022-05-13http://erepository.kibu.ac.ke/handle/123456789/5204SPC 221:Physics opticsenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPC 221:Physics opticsPhysics opticsSPC 221Other