power 4dLive 4D Results for Magnum 4D, Sports ToTo, DaMaCai 1+3D, Sabah 4D, CashSweep 4D, Sandakan 4D & SingaporeTo find the effective power of a combination of a convex lens and a concave lens, we can follow these steps: 1. Identify the Powers of the Lenses : - The power of the convex lens (P1) is given