Distinguish between real and virtual image with an example.

Explanation

Real image. When a number of rays starting from a point after reflection or refraction actually meet at another point, that point is called real image of the first point. A real image can be obtained on the screen.
Virtual image. When a number of rays starting from a point after reflection or refraction do not actually meet but appear to do so when produced backwards, the image is said to be virtual. Virtual image cannot be obtained on the screen.