(a) At the principal focus of the lens
(b) At twice the focal length
(c) At infinity
(d) Between the optical centre of the lens and its principal focus.
Answer –
The correct option is (b). The object should be placed at twice the focal length.
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
Where should an object be placed in front of a convex lens to get a real image of the size of the object?