A person having short-sight cannot see objects clearly beyond a distance of 1.5 m. The nature and power of the corrective lens to restore proper vision is concave.

The calculation of the power is shown as:-

Here, far point of myopic eye = 1.5 m

The object kept at infinity can be seen dearly if the image of this object is formed at 1.6m.

So, object distance =

Image distance, v = 1.5 m