Question

A doctor has prescribed a corrective lens of power+ 1.5D .find the focal lens of the lens. if the prescribed lens diverging or converging.

Answer 1

Hi..


We have, Power = +1.5 D

We know,

Power = 100/f

or, 1.5 = 100/f

or, f = 100/1.5 = 66.6

The focal length of the lens = 66.6 cm..

Hope this helps u!!