Question

If an object is placed between the focal point and twice the focal length of a convex lens, which type of image will be produced?
The image produced is virtual and enlarged.
The image produced is virtual and smaller than the object.
The image produced is real and enlarged.
The image produced is real and smaller than the object.
The image produced is virtual and of the same size as the object.

Answer 1

The image produced is real and enlarged.

Check for various positions of objects and Images for convex lens.

Note at position of 2F, the image is same as the object, and once it is between 2F and F, the image becomes bigger than the object. 

Answer 2

Answer:

The image produced is real and enlarged

Explanation:

When we draw the image of an object through ray diagram, we use 3 rules, for the path of ray passing through convex lens, which are as follows:

1. The ray which is coming parallel to the axis, is converged on the focus after passing through convex lens.

2. The ray which comes passing the focus, becomes parallel to axis after passing the lens.

3. A ray that passes through the center of lens, goes straight without the change of direction.

These, rules are displayed in the diagram attached.

Drawing the ray diagram of an object between f (focus) and 2f (center of curvature) of lens, we find the following characteristics of the image formes:

The image produced is real and enlarged

The ray diagram is attached.