Draw ray diagrams showing the image formation by a convex lens when an object is placed
(a) between optical centre and focus of the lens
(b) between focus and twice the focal length of the lens
( c) at twice the focal length of the lens
(d) at infinity , (e) at the focus of the lens

Explanation

The enlarged, virtual and erect image forms beyond `2F_1` in the same side of object when the object is placed between optical centre and focus `F_1` of the lens.