When we see the eyes of a person through the lenses of spectacles, work by him, they looked small in size ?
What is the vision defect ?

When we see the eyes of a person through the lenses of spectacles, work by him, they looked small in size ? What types of lens are they ?

What is the vision defect of person 'B'?

How do the lenses used in spectacles correct defects of vision.

By using the spectacles of a concave lens of power -5 m^(-1) a man can read a book keeping it at a distance of 30 cm from his eyes. Without spectacles what is his least distance of distinct vision ? What is the nature of defect in his eyes ?

Kishore wore spectacles. When you saw through his spects the size of his eyes seemed bigger than their original size. Explain that defect of vision (with the help of a diagram)

Answer the following questions : Aniket from Std. X uses spectacles . The power of the lenses in his spectacles is -0.5 D. Answer the following question : Name the defect of vision Aniket is suffering from .

Why do we use lenses in spectacles to corret defects of vision?