The correct option is option 1: Both A and R are individually true and R is the correct explanation of A.
Myopia, also known as nearsightedness, is a refractive error of the eye where distant objects appear blurry. People with myopia can see close objects clearly, but distant objects appear blurred. A common approach to correcting myopia is by using a concave lens.
A concave lens is a lens that is thinner at the center and thicker at the edges. It is designed to diverge or spread out light rays that enter it. The reason for using a concave lens in myopia is that it helps to counteract the excessive focusing power of the eye. By diverging the incoming light rays, it allows the eye`s lens to properly focus the light onto the retina, resulting in clearer vision for distant objects.
Therefore, assertion A is true that a person suffering from myopia uses a concave lens. Reason R is also true, as a concave lens does indeed diverge a beam of light incident on it. The reason correctly explains why a concave lens is used in myopia correction.