Ordonner les Mots Effective power 8Version en ligne Game to improve topic knowledge par Nohora Beatriz Celis Duarte 1 What is the procedure to calculate the effective power of a lens when moves away from the eye? length - new this focal - power - the the this - the the answer distances inverse The between - the is From of . effective the difference , of result outcome and the add - focal inverse the vertex of carried length - and - is . lens - dioptric value is the is The out - - - - - - . , - - - . - - 2 What is the procedure to calculate the effective power of a lens when moves away from the eye? power the of lens