EVERYDAY SCIENCE

Detailed explanation-1: -Today, the pure science of optics is called optical science or optical physics to distinguish it from applied optical sciences, which are referred to as optical engineering.

Detailed explanation-2: -The basic optic function of the eye is to form an image of whatever object being looked at (fixated on) on the retina. This image formation is done by the combination of the cornea and the lens which behaves like a convex lens.

Detailed explanation-3: -Optics is the popular branch of physics which deals with the determination of behaviour and the properties of the light. It also considers the interactions with the matter and also with the instruments which we need to detect it.

Detailed explanation-4: -lens, in optics, piece of glass or other transparent substance that is used to form an image of an object by focusing rays of light from the object.