For a Concave Lens the Image Is?

Concave lenses create only virtual images. After the rays are refracted, they never converge and so there will be no real images. All concave lens images will be upright, virtual, and diminished, and can be found between the F and the lens.

What type of image is formed by a concave lens?

In case of the concave lens, we always get erect images, diminished images and virtual images. Here if the object is very far away, the images formed by lenses will be all the more diminished.

Is image positive or negative in concave lens?

A concave lens diverges the rays incident on it. So the image will be formed behind the lens. So the image distance becomes negative. (The image distance is measured from the principal point to the point at which the image is formed.)