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Question
Statement I: Hypermetropia can be corrected using concave lenses.
Statement II: Myopia can be corrected using convex lenses.
Statement I: Hypermetropia can be corrected using concave lenses.
Statement II: Myopia can be corrected using convex lenses.
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Solution
The correct option is D Both the statements are incorrect.
A person with myopia can see objects close to them clearly, but not far away.
- In myopia, light rays are concentrated ahead of the retina instead of on the retina.
- A concave lens diverges the light a little before it enters our eye in such a way that all the light rays start to concentrate onto the retina and makes clear vision possible.
Similarly, a person with hypermetropia cannot see objects close to them clearly, but can clearly see objects which are far away.
- In hypermetropia, light rays are concentrated on the backside of the retina instead of on the retina. This happens due to the eyeball being smaller than normal.
- A convex lens converges the light a little before it enters our eye. This allows the light rays to concentrate on the retina and makes clear vision possible.
Therefore, myopia is corrected using a concave lens, and hypermetropia is corrected using a convex lens.
Hence, both the given statements are incorrect.
A person with myopia can see objects close to them clearly, but not far away.
- In myopia, light rays are concentrated ahead of the retina instead of on the retina.
- A concave lens diverges the light a little before it enters our eye in such a way that all the light rays start to concentrate onto the retina and makes clear vision possible.
Similarly, a person with hypermetropia cannot see objects close to them clearly, but can clearly see objects which are far away.
- In hypermetropia, light rays are concentrated on the backside of the retina instead of on the retina. This happens due to the eyeball being smaller than normal.
- A convex lens converges the light a little before it enters our eye. This allows the light rays to concentrate on the retina and makes clear vision possible.
Therefore, myopia is corrected using a concave lens, and hypermetropia is corrected using a convex lens.
Hence, both the given statements are incorrect.
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