Write two characteristics of image formed when an object is placed between the optical centre and focus of a thin convex lens. Draw the graph showing variation of image distance v with object distance u in this case.

Draw a ray diagram to show the formation of the image of an object placed between the optical centre and focus of a convex lens. Deduce the relationship between object distance, image disatnce and focal length of lens.

State three characteristics of the image formed by a convex lens when the object is close to it.

The graph between the image distance (v ) and object distance (u) from the convex lens is

Write three characteristics of the image formed by a convex lens when the object is placed at a distance greater than twice the focal length of convex lens.

If an object is placed at the focus of a convex lens, where is the image formed?