The various distances related to mirrors are
- Focal Length (f): The distance between vertex and focus is called focal length.
- Radius of curvature ® : The distance between vertex and centre of curvature is called radius of curvature.
- Object distance : It is the distance between the object and pole of mirror and is denoted by ‘u’.
- Image distance : It is the distance between the image and pole of the mirror and is denoted by V.