Physics lens

Convex Lens

A lens that converges light rays to a point called the principal focus.

Principal Focus

The point where rays of light converge after passing through a convex lens.

Concave Lens

A lens that diverges light rays, causing them to spread apart.

Divergent Lens

A lens that causes parallel rays of light to diverge after passing through it.

Focal Length

The distance from the lens to the principal focus, affecting the convergence of light.

Refracted Ray

A ray of light that has changed direction as it passes through a lens.

Optical Centre

The central point of the lens where light rays pass through undeviated.

Real Image

An image formed when light rays converge and can be projected on a screen.

Virtual Image

An image formed by diverging rays, which cannot be projected on a screen.

Laterally Inverted

An image where left and right are reversed, typically seen in reflection or certain lens scenarios.