The distance between the optical centre of a convex lens and its principal focus is called its_______?A. Focal LengthB. Radius of CurvatureC. PowerD. Magnification 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Website Label {} [+] Name* Email* Website 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments