Which one of the following is not the characteristic feature of the image formed when the object is placed at 2F1 of the convex lens ? 

B) between F1 and C1 

Correct option is  C) at C1

D) beyond C1

B) at infinity

C) same side of the lens

D) between focus and optic centre

D) between focus and centre of curvature

A) at the centre of the curvature

D) between focal point and optic centre

Correct option is  B) at F