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Far-sightedness can be rectified by usin...

Far-sightedness can be rectified by using a concave lens of suitable power.

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Explore conceptually related problems

Give scientific reasons for the following statements: To rectify the defect of near-sightedness or myopia, concave lens of suitable focal length is used as corrective lens.

Give scientific reasons for the following statements: To rectify the defect of far-sightedness or hypermetropia, convex lens of suitable focal length is used as corrective lens.

Is power negative or positive for concave lens ?

Lens of power +2.0D is a convex lens

A person can not see object in two orthogonal direction clearly. It can be removed by using cylindrical lens in particular direction.

Write use of bifocal lens.

Near-sightedness arises due to more curvature of the cornea or due to the eye lens remaining thick permanently.

Lens of power +2.0 D is a convex lens.

Answer the following questions: (c) Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convex lens of smaller and smaller focal length and achieving greater and greater magnifying power?