What are the names given to the objective lenses and their powers?

The objective lenses on a microscope are typically labeled with names and their corresponding magnification powers. Common names include "scanning" (4x), "low power" (10x), "medium power" (40x), and "high power" (100x). The numbers represent the magnification level, indicating how many times larger the specimen appears compared to its actual size. Some microscopes may also have additional lenses with varying powers, such as 25x or 60x.