16. A person suffering from y defect and doctor he suggested him were +1 .5D power lens. Then find the
focal length of the lens and also write which type eye defect he is suffering. And also draw the ray
diagram showing the defect
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Since the power is positive it refers to a convex lens. This implies the defect is Hypermetropia. Focal length=1/ power=1/1.5=0.67 m
Refer ncert for diagram
Refer ncert for diagram
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