Real image: If a beam of rays starting from a point source of light, after reflection or refraction, actually converges to a point, then the second point is called the real image of the first.
A real image is formed due to actual intersection of rays, so it can be obtained on a screen.
It is usually inverted.
e.g., The images formed on a cinema screen are real images.
Virtual image: If a beam of rays starting from a point source of light, after reflection or refraction, appears to diverge from another point, then the second point is called the virtual image of the first.
A virtual image is not formed due to the actual intersection of the rays, so it cannot be obtained on a screen.
Virtual image is usually erect.
e.g. The image of our face in a looking glass is a virtual image.
Define the following terms in connection with reflection of light:
Incident ray, reflected ray, point of incidence, normal, angle of incidence and angle of reflection.
