To remove myopia (short sightedness) a lens of power 0.66 D is required. The distant point of the eye is approximately

A person suffering from the eye-defect myopia (short-sightedness) can see clearly only up to a distance of 2 meters. What is the nature and power of lens required to rectify this defect ?

The far point of a myopic (short-sighted ) person is 80 cm in front of the eye. What is the power of the lens required to enable him to see very distant objects clearly.

A person needs of power -4D for correcting his distant vision. For correcting his near vision he needs a lens of power + 1.5 D . What is focal length of the lens required for correcting? (i) Distant vision (ii) Near vision ?

What is the power of the lens, if the far point of a short- sighted eye is 200 cm?

Assertion : Concave lens is used to correct myopia or short-sightedness. Reason : A concave lens of suitable focal length diverges the parallel rays from the distant objects as if they are coming from the far point of the myopic eye. This helps the eye lens to form a clear image at the retina.

The far point of a myopia person is 200 cm. Calculate the power of a lens required to enable him to see distant objects clearly.