Sign convention for lens - Concave and Convex Lens - eSaral

Hey, do you want to learn about the sign convention for lens? If yes. Then keep reading. Sign Convention Whenever and where possible, rays of light are taken to travel from left to right. The transverse distance measured from the optical center and is taken to be positive while those below it negative. Longitudinal distances are measured from the optical center and are taken to be positive if in the direction of light propagation and negative if opposite to it e.g., according to our convention c...