Draw a ray diagram to show the formation of real image of an object when refraction of light takes place through a convex lens. Mark as per the new Cartesian sign convention the object-distance (u), image distance (v) and the focal length (f) and also write the relation between u, v and f.
Formation of Real image:
According to Cartesian convection
U is towards left side hence negative(-Ve)
V and F is towards right side hence positive (+ve)
Relation between u,v and f