Stunning Derive Lens Maker Formula
The above equations were derived on the assumption that the lens was immersed in air.
Derive lens maker formula. Lens makers formula. Derivation of lens makers formula lens makers formula class 12 in hindi 2020lens makers formula is one of the most important topic for boardsabout thi. Write the basic assumptions used in the derivation of lens makers formula and hence derive this expression.
Hence obtain the expression for lens-makers formula in the case of thin convex lens. In this video learn how to derive lens maker formula for thin lens. The image formation can be seen in two steps the first refracting surface form an image I 1 which act as a virtual object for the second surface.
1 f n L n m 1 1 R 1 1 R 2 But theres a more appropriate equation that includes the thickness of the lens which is. The Lens Makers Formula is an expression used to find the focal length of a lens for which the refractive index as well as the radii of curvature are known. It is so called because it is used by lens manufacturers to make lenses of particular power from the glass of given refractive index.
A lens maker formula may be defined as the formula which gives the relationship for calc. The focal length of a lens depends upon. The well-known equation for thin lens is.
It is a relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. This formula is only applicable to a lens. The lens maker formula is a relation between the focal length the refractive index of constituent material and the radii of curvature of the spherical surfaces of a lens.
If you want me to teach you Biology or Chemistry or Physics. Derive the relation between object and image distance in terms of refractive index of the medium and radius of curvature of the surface. Lenses of different focal lengths are used for different optical instruments.