What are real and virtual images ? How will you find out whether an image is real or virtual ? Can a virtual image be obtained on a screen ?

Explanation

An image formed by convergence of reflected or refracted rays of light at a point is called a real image.
An image formed at a point from which the reflected or refracted rays of light appear to diverage is called a virtual image.
A real image can be obtained on a scrren . A virtual image cannot be obtained on a screen. Thus , if an image can be obtained on a screen, it must be real, if it cannot be obtained on a screen it must be virtual. This is how we can find out whether an image is real or virtual.