A double convex lens is used in a simple microscope.
Simple microscopes, in essence magnifying glasses, employ a single lens to create a magnified image of small objects. This lens is specifically a double convex lens, also known as a converging lens.
Here's why a double convex lens is ideal for this purpose:
- Magnification: The curved surfaces of the convex lens cause light rays to bend (refract) inwards, converging at a focal point. When an object is placed closer to the lens than its focal length, the lens produces a magnified, virtual, and upright image.
- Short Focal Length: Simple microscopes utilize lenses with short focal lengths to achieve higher magnifications. The shorter the focal length, the greater the magnification.
In summary, the double convex lens's ability to converge light and create magnified images with a short focal length makes it the perfect choice for use in a simple microscope.
