Question

guess and write what happen if power lens dioptre is not come into useful​

Answer 1

human is blind condition because if he seen virtual features because focus distance is opposite side

Answer 2

If power lens dioptre is not used then the benefits of using the optical power will not be gained.

This is opposite to the use of the focal length by a lensmaker specialist who draws an equation for creating object distance, the distance of the image and focal length as a reciprocal.

More benefits are availed since lens used are thin relatively.

Thee are placed close by one another. A 2.0 dioptre lens can be used as close as to a 0.5 dioptre which will yield a similar focal length just like a single 2.5 dioptre lens.