Can a plane mirror ever form a real image?

  1. Real image can only be formed when the reflected rays converge.
  2. For plane mirrors it is not possible.
  3. However if the reflected rays are converged it can form a real image.
  4. Consider, a source of light at infinity (say sun) and plane mirror is very small in size, its reflected image will show a circular bright spot (image of sun) on the screen.