Magnifying Glass

Magnifying Glass

1. Magnifying glass is also known as simple microscope.
2. A magnifying glass is a single convex lens with short focal length.
3. The iage formed is
1. virtual,
2. magnified
3. upright
4. A magnifying glass enlarges the image of an object by increasing the virtual angle at the eye when the object is viewed.

Angular magnitude and apparent size

1. The angular magnitude of an object is the virtual angle at the eye. It is the angle the object subtends at the eye.
2. This angle determines the size of the image (apparent size) formed on the retina and hence governs the apparent size of the object