1.

State two main cause due to which a person may develop near sightness or myopia. With the help of a ray diagram suggest how this defect can be corrected​

Answer»

Explanation:

→ The defect of eye called MYOPIA [ Short - SIGHTEDNESS ] is caused due to : (i) Due to high CONVERGING power of eye-LENS ( because of its short focal length ) . (ii) Due to eye-ball being too long . → Myopia is corrected by using spectacles containing concave lens



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