The condition where a person is unable to see distant objects clearly is called Myopia (nearsightedness). Statement I: Hypermetropia (farsightedness) is the difficulty in seeing near objects clearly. Therefore, stating the person is suffering from hypermetropia is incorrect for the described symptom. Statement II: Myopia is caused when light is focused in front of the retina. This can happen if the eyeball is too long (axial myopia) or if the cornea or lens is too curved, causing excessive refraction (refractive myopia). The statement correctly describes potential causes of this defect. Statement III: Myopia is corrected by using a concave (diverging) lens. A concave lens diverges light rays before they enter the eye, shifting the focal point backward onto the retina. This statement correctly describes the correction for this defect. Statement IV: A convex (converging) lens is used to correct hypermetropia or presbyopia, where light is focused behind the retina. Using a convex lens would worsen myopia. This statement is incorrect.
A person is unable to see distant objects clearly: Statement - I: The person is suffering from hypermetropia. Statement - II: This defect may be caused by excessive curvature (curvature) of the eye lens or elongation (elongation) of the eyeball. Statement - III: The defect can be corrected by using a concave (concave) lens of proper power. Statement - IV: The defect can be corrected by using a convex (convex) lens of proper power. Which of the above combinations is correct?
Asked in HAS Prelims 2021 · Topic: Optics (Optical Instruments: microscopes, telescopes, human eye)
More Physics questions
- 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?
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