Question

For a simple microscope, the angular size of the object equals the angular size of the image. Yet it offers magnification. Explain how this is possible.

Hint:

Remember, the key to understanding magnification in microscopes is not just the size or type of image produced but how the image position relative to the eye affects the angular size perceived by the observer.

Answer 1

A simple microscope or magnifying glass primarily functions to enable objects to be placed closer to the eye than the normal minimum focus distance (the near point, typically about 25 cm for a young adult). By doing so, the microscope allows the observer to bring the object closer than this near point while still being able to focus comfortably.