- Statement I: The person is suffering from Hypermetropia. Hypermetropia (farsightedness) is difficulty seeing near objects clearly, while distant vision is usually good. Since the person cannot see distant objects clearly, this statement is false. - Statement II: The defect may have been caused due to excessive curvature of the eye lens or elongation of the eye ball. Myopia is caused when the eye converges light too strongly, causing the focal point to fall in front of the retina instead of on it. This can be due to an eyeball that is too long (axial myopia) or a lens/cornea that is too curved (refractive myopia). This statement correctly describes causes of Myopia. This statement is true about the defect described. - Statement III: The defect can be corrected by using a concave lens of suitable power. A concave (diverging) lens is used to correct Myopia. It diverges the incoming light rays before they enter the eye, shifting the focal point back onto the retina. This statement is true about the correction for the defect. - Statement IV: The defect can be corrected by using a convex lens of suitable power. A convex (converging) lens is used to correct Hypermetropia. This statement is false about the correction for Myopia.
A person is not able to see distant objects clearly. Statement - I : The person is suffering from Hypermetropia. Statement - II : The defect may have been caused due to excessive curvature of the eye lens or elongation of the eye ball. Statement - III : The defect can be corrected by using a concave lens of suitable power. Statement - IV : The defect can be corrected by using a convex lens of suitable power. Which of the following combinations of above statements is correct?
Asked in HAS Prelims 2021 · Topic: Optics (Optical Instruments: microscopes, telescopes, human eye)
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