Question

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

Answer 1

Answer:

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Answer 2

Explanation:

• Myopia is a vision defect which causes a person to be unable to see distant objects clearly but to have normal near vision.
• Myopia arises because the eye lens converging power is greater than normal, and representations of distant objects are created before the retina.
• As a consequence, certain objects cannot be clearly seen by a person with myopia. In some other cases, myopia happens because the eyeball is too long, and there is a large distance between the retina and the eye lens.
• This, too, causes images to form before the retina. A myopic eye's far point is narrower than infinity. The accompanying ray diagram illustrates the myopic eye and how concave lenses can be used to correct the defect.
• A concave lens differs the light rays from celestial objects to form the objects visual images at a distant point of the eye. Then the crystalline lens quickly focuses the rays of light from a distance to form clear images on the retina.

You can get all the answers of Chapter 6 in the link below:    

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