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
OR
Draw the ray diagram when the object is kept between `F_(1)` and `2F_(1)` of the convex lens. With the help of the diagram mention the position and nature of the image formed. [`F_(1)` : Principal focus of the lens]
(c ) at twice the focal length of the lens
(d) at infinity
(e ) at the focus of the lens

Explanation

i) at focus `F_1`
(ii) beyond `2F_1`