Two thin lenses of power +4 D and -2 D are in contact. What is

power 4dThe 4 Discips of. Execution (4DX) Apa itu 4DX? 4DX adalah proses untuk mencapai sasaran atau goals secara efektif. Kenapa 4DX? 1. Menentukan Prioritas 2. Disiplin EksekusiTo 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