Complete the following table by observing the given figures :PointsFigure 1Figure 2(a) Name of the defect....................................(b) Position of the image....................................(c) Lens used to correct the defect.............…

Answer: Figure 1 – myopia (short sight); image in front of the retina; corrected by a concave lens. Figure 2 – hypermetropia (long sight); image behind the retina; corrected by a convex lens.

In Figure 1 the rays converge before reaching the retina. This happens when the eye lens is too converging or the eyeball is too long, so distant objects look blurred. It is myopia, corrected by a concave (diverging) lens of suitable power, which shifts the image back on to the retina.

In Figure 2 the rays would converge behind the retina, because the eye lens is too weak or the eyeball is too short, so nearby objects look blurred. It is hypermetropia, corrected by a convex (converging) lens which brings the image forward on to the retina.