Question

a person cannot see distinctly the book placed nearer than 60cm from his eyes.(i)name the defect of vision the person is suffering from.(ii)list two possible causes of this defect.(iii)draw ray diagram to show this vision defect.(iv)how can this defect be corrected?(v)draw a ray diagram to show correction of this defect.

Answer 1

The eye defect from which he is suffering is HYPERMETROPIA

The causes of this disorder are

1 the decrease of the size of the eye ball

2 the increase in the focal length of the eye lens

This can be corrected by using the concave lens