Describe the behaviour of light when it passes ... - SS1 Physics Light And Optics Question

A convex lens is a lens that is thicker at the centre and thinner at the edges. When light passes through a convex lens, it converges or comes together. This convergence of light rays is due to the shape of the lens and the refractive properties of the material. The convex shape causes the light rays to bend inward towards the centre of the lens.

This bending is known as refraction. As a result, parallel rays of light that pass through a convex lens converge and meet at a point called the focal point. The distance from the centre of the lens to the focal point is called the focal length. The behaviour of light passing through a convex lens allows it to form images, and it is the basis for the functioning of optical devices such as magnifying glasses, cameras, and telescopes.