What is a lens? What are its types? Define the basic terminologies of lenses.
A lens is a transparent optical device that bends light. Types: 1. Convex lens (Converging lens): Thicker in the center, brings light together. 2. Concave lens (Diverging lens): Thinner in the center, spreads light apart. Terminologies: Optical center (O): The center of the lens. Principal axis: A straight line passing through the center of the … Read more