Question

A person cannot see objects nearer than 75 cm but can clearly read the banners placed on the
roadside from a distance.
a) Name the defect of vision he is suffering from
b) List two causes of this defect of vision.
c) How can it be corrected?
d) Draw ray diagrams showing the (i) defective eye (ii) corrected eye.
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Answer 1

Answer:

a) this person suffering with the defect of hypermetropia or long sightedness

b) causes of this defect are

1) focal length of eye lens is greater than 2.27cm

2.) the size of eyeball may decrease

3) for correction of this defect we should use convex lens of suitable focal length

4)