Working of Telescope - Ray Optics, Class 12 - eSaral

A Telescope is an optical instrument used to increase the visual angle of distant large objects such as a star a planet. If you want to learn about the Working of a Telescope then keep reading. Telescope It is an optical instrument used to increase the visual angle of distant large objects such as a star a planet or a cliff etc. An astronomical telescope consists of two converging lenses. The one facing the object is called an objective or field - lens and has a large focal length and aperture, ...