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Example with the help of labelled ray di...

Example with the help of labelled ray diagram, the defect of vision called myopia and how it is corrected by a lens.

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Myopia (or) Near sightedness :
The light from a distant object arriving at the eye-lens may get converged at a point infront of the retina. This type of defect is called myopia.
To correct this, we interpose a concave lens between the eye and the object.
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