KIBU2022-10-192022-10-192022-01-18http://erepository.kibu.ac.ke/handle/123456789/6155SPC 221:Physics opticsenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPC 221:Physics opticsSPC 221Physics opticsSPC 221:Physics opticsSPC 221:Physics opticsPhysics opticsSPC 221Other