A convex lens of power 4D is kept in contact with a concave lens

power 4dReal time live 4D draw results (Keputusan 4D) - Magnum 4D, Sports Toto 4D, Da Ma Cai, Sabah 88 Lotto 4D, Sarawak Special Cash Sweep 4D, STC 4D, Singapore Pools 4D + Toto.Power of the lens (P) = 4 D. Refractive Index (r) = 1.5. To Find: The radius of curvature. Calculations: The following equation determines a lens's power: where P is the power of