![Derive the relation between the focal length of a convex lens in terms of the radii of curvature of the two surfaces and refractive index of its material. Write the signi conventions Derive the relation between the focal length of a convex lens in terms of the radii of curvature of the two surfaces and refractive index of its material. Write the signi conventions](https://toppr-doubts-media.s3.amazonaws.com/images/4734005/84f88bfb-c922-46dd-a1fd-6289facda29d.jpg)
Derive the relation between the focal length of a convex lens in terms of the radii of curvature of the two surfaces and refractive index of its material. Write the signi conventions
Will be the focal length of a lens be equal in both sides along the principal axis, if the radius of curvatures of the curved surfaces are different? - Quora
MathType - The focal length for a positive converging lens in air is the distance from the lens to the point where the incident light beam is focused. It can be calculated
![Displacement Method for finding Focal Length of Convex Lens Class 12Optics @Kamaldheeriya Maths easy Displacement Method for finding Focal Length of Convex Lens Class 12Optics @Kamaldheeriya Maths easy](https://i.ytimg.com/vi/QvTNJ-oRsV4/maxresdefault.jpg)