A convex lens of power + 6D is placed in contact with a concave

power 4dThe 4DX PowerPoint Template consists of three slides with creative layouts for depicting the attributes of this execution methodology. The first slide shows a speedometer diagram withOptical power is also referred to as dioptric power, convergence power, refractive power, or refractive power. It is equal to P = 1 f. Dioptre Formula . The Dioptre formula is used to