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Refraction at Curved Surfaces

What type of ...

Question

What type of lens is used to correct (a) hypermetropia (b) myopia?

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Solution

(a) Convex lenses are used to correct hypermetropia.
(b) Concave lenses are used to correct myopia.

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What type of lens is used to correct (a) hypermetropia (b) myopia?

What kind of lens is used to correct hypermetropia?

Q. Statement I: Hypermetropia can be corrected using concave lenses.
Statement II: Myopia can be corrected using convex lenses.

Q. A person needs a lens of power

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for correcting his vision. What is the defect of vision that the person is suffering from? Also, find the focal length of the lens.

Q. Distinguish between myopia and hypermetropia. Draw diagrams to show how these defects can be corrected by using suitable lenses.

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