Question

what is convex lens? What is its uses​

Answer 1

• An optical lens is generally made up of two spherical surfaces. If those surfaces are bent outwards, the lens is called a biconvex lens or simply convex lens. These types of lenses can converge a beam of light coming from outside and focus it to a point on the other side.

• 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. Eyeglasses with convex lensesincrease refraction, and accordingly reduce the focal length.

Answer 2

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An optical lens is generally made up of two spherical surfaces. If those surfaces are bent outwards, the lens is called a biconvex lens or simply convex lens. These types of lenses can converge a beam of light coming from outside and focus it to a point on the other side.

USES :

• 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.

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