Question

purpose of convex lens​

Answer 1

The lens in the human eyes is the prime example. So the most common use of the lens is that it helps us to see.Another common example of the use of this type of lens is a magnifying glass. When an object is placed in front of it at a distance shorter than the focal length of the lens, it produces a magnified and erect image of the object on the same side as the object itself.

It is used to correct Hypermetropia or long-sightedness.

It is used in cameras because it focuses light and produces a clear and crisp image.

More generally these are often used in compound lenses used in various instruments such as magnifying devices like microscopes, telescopes and camera lenses.

A simple kind of these lenses can focus light into an image, but that image won’t be of a high quality. For correcting the distortions and aberrations, it is better to combine both types of lenses.

Answer 2

purpose of the Convex Lens:

1. It is used in camera lens because they focus light for a clear picture.
2. It is used in front of the eye bends the incoming light sharply so the focal point shortens and the light focuses properly on the retina.
3. Convex lenses are used in eyeglasses for correcting farsightedness, where the distance between the eye's lens and retina is too short, as a result of which the focal point lies behind the retina.
4. Eyeglasses with convex lenses increase refraction, and accordingly reduce the focal length.