Physics - Optics - Lenses - Lens equation and magnification - Lens Equation and Magnification

A 5-step lesson. Step 1: 'Lens equation: 1/v - 1/u = 1/f. Sign convention (New Cartesian): Distances measured from optical center. Object side = negative, image side = positive. Convex f = +, Concave f = -.' Step 2: 'Linear magnification: m = v/u = image height / object height. |m| > 1: image larger