Want this question answered?
The focal length of the lens and the distance between the lens and the object.
In a concave lens the object always forms a virtual image. The convex lens also forms a virtual image.
The image will be formed at infinite distance as parallel ray come out of the lens after refraction through lens.
Virtual image
Image formed by a concave lens or a diverging lens is virtual,upright and smaller than the object.It is used by short sighted people.
first
A real and inverted image is formed on the retina.
If the object is more distant from the lens than the focal length of the lens, a real image is formed.
concave lens formed virtual,erect and diminished image irrespective to the distance between the object and lens.
image formed by the concave lens will be erect , virtual and smaller than the size of object.
The principle of image formation in a compound microscope states that the second lens magnifies the image formed by the first lens. The use of two lenses enhances the magnification of the image.
The image produced is a real image if the object is located at infinity and the lens is a convex lens. The produced image can actually be placed on a screen and photographed.