Question

An object is placed between f and 2f of convex lens. Which of the following statements correctly describes its image?
(a) real and elongated (i.e. larger than the object)
(b) erect and diminished
(c) Inverted and same size as the object
(d) virtual and enlarged

Answer 1

Hint:In order to solve this question and get the solution, we need to place the object on the mentioned place of a convex lens and get the result as shown below.

When an object is placed between F and 2F in front of a convex lens, the image formed is magnified, real, inverted and beyond 2F.

Hence, the answer to this question is option (a) real and elongated (i.e. larger than the object)

Additional Information:The convex lens is a lens that converges rays of light that convey parallel to its principal axis (i.e. converges the incident rays towards the principal axis) which is relatively thick across the middle and thin at the lower and upper edges. The edges are curved outward rather than inward.

Note:While solving this question, the placement of the object must be as directed by the question. Here it is between $2{{F}_{1}}$ and ${{F}_{1}}$(focus). The ray should be perfectly drawn and the laws should be kept in mind while drawing rays. The ray which is parallel to the principal axis, always passes through the focus and vice versa. The ray which passes through the optical centre, goes straight in the same path. Where the two or more rays meet together, the image is formed at the meeting point of the rays.