Question

Define principle Focus (F) of Convex lens.​

Answer 1

Answer:

The light rays that converge on the principal axis after reflecting from a convex mirror and are parallel to the principal axis are called principal focus of a convex mirror.

Answer 2

Answer:

Here is your answer dear

Explanation:

The principal focus of a convex lens is defined as the point on which the principal axis of the light is parallel to the principal axis that converges after the refraction from the lens. The principal focus of concave lens is when the light rays get diverged and appear to form a single point.

For a converging lens, the focal point is the point at which converging light rays cross; for a diverging lens, the focal point is the point from which diverging light rays appear to originate. The distance from the center of the lens to its focal point is called the focal length f.