Define lens. Which type of lens is used to correct hypermetropia?
Answers
Answer:
convex
convexDue to these reasons, the image of a distant object is formed behind the retina. The Hypermetropia vision defect can be corrected by using a convex lens of suitable power in the front of the myopic eye. ∴ Myopia can be treated by the concave lens and Hypermetropia can be treated using the convex lens.
A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.
Lenses are used in various imaging devices like telescopes, binoculars and cameras. They are also used as visual aids in glasses to correct defects of vision such as myopia and hypermetropia.