## Lens makers formula | Lens maker’s formula

Lens makers formula Lens maker’s formula   Lens makers formula :- Lens maker’s formula is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its...

## Lens

Lens     Lens :- A lens is a piece of transparent material with two refracting surfaces such that at least one is curved and refractive index of its material is different from that of the surroundings. Types of lens :...

## Spherical Refracting Surface

Spherical Refracting Surface     Spherical Refracting Surface :-  A refracting surface which forms a part of a sphere of transparent refracting material is called a spherical reflecting surface. These are of two...

## Total Internal Reflection

Total Internal Reflection   What is Total Internal Reflection? When light travels from an optically denser medium to a rarer medium at the interface, it is partly reflected back into the same medium and partly refracted to...

## Refraction of light

Refraction of light     Refraction of light:- When a ray of light enters from one medium to another transparent medium, a part of the light gets reflected back in the first medium while the remaining part enters the...

## Mirror Formula

Mirror Formula       Mirror Formula :- Below figure shows the ray diagram of image formation by concave mirror considering three rays. It shows the image A′B′ (real in this case) of an object AB. In the above...

## Relation between focal length and radius of curvature

Relation between focal length and radius of curvature (f = R/2)       Relation between focal length and radius of curvature :- Let C be the center of curvature of the mirror. Consider a ray parallel to the...

## Image formed by plane mirror

Image formed by plane mirror     Image formed by Plane Mirror :- The image formed by a plane mirror is always virtual, upright, and of the same shape and size as the object. The image behind the mirror is called...