power 4dSDTOTO menyediakan berbagai link alternatif login untuk bermain slot gacor hari ini server luar negeri dan togel 4D on dengan peluang jackpot maxwinTo find the focal length of the combination of two thin lenses in contact, we can follow these steps: Step 1: Identify the Powers of the Lenses We have two lenses: - Lens 1 has a power ( P1 = +4