Question

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Answer 1

answer 1. the defect of vision is Long-sightedness or hypermetropia.
Answer 2. person can only see distant object clearly but cannot the nearby object clearly.
Answer 2. This defeat can be corrected by using the spectacles having convex lenses.

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Answer 2

1) The defect of the vision is Hypermetropia

2) The two possible causes are:-

a) The curvature of the eye lens is too small.

b) The eyeball is shortened

3) correction for Hypermetropia:-

The Hypermetropia defect can be corrected by the use of convex lens of suitable power.

The diagram is:-