Question

how the real image will form?

Answer 1

Bottom: The formation of a real image using a concave mirror. ... Itcan be seen that the image is formed by actual light rays and thus can form a visible image on a screen placed at the position of theimage. Producing a real image.

Answer 2

convex lens has a real focus.A real image is formed due to actual intersection of refracted rays.A real image is inverted it can be obtained on a screen.