Question

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

Answer 1

The person needs a concave lens to rectify the defect
Calculation of power of the lens:
Here, far point of myopic eye = 2m
The object kept at infinity can be seen clearly if the image of the object is formed at 2m.
so the object, u = infinity
image distance, v = 2m