Refraction by spherical lenses
Refraction by spherical lenses Refraction means to state that the change of the direction of the parallel beam of ray of lights when it passes through one medium to another medium. The image formed by the convex lens is enlarged. And the image formed by the concave lens is diminished. Lens :-- A lens is a transparent material bounded by two surfaces of which one or both surfaces are spherical. It means to say that a lens is bounded by at least one spherical surface. And other surface is plane surface. Or we can say that lens is a transparent material or glass bounded by the two spherical surfaces and is used for magnifying the objects. The working of lens is mainly based on the refraction of ray of lights when they passes through it. There are two types of lens. A concave lens and convex lens. concave surface convex surface Convex lens :-- A convex lens is the spherical lens having two spherical surfaces bulging outward