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Question

(a) What is myopia (near-sightedness)?
(b) Draw a ray diagram to show an eye having myopia.
​(c) Draw another ray-diagram to show how myopia can be corrected by using a lens.


Solution

(a) Nearsightedness (myopia) is a common vision defect, in which a person can see only nearby objects clearly, but distant objects appear to be blurry. This defect arises due to the decresed focal length of the eye lens or due to elongation of the eyeball.

(b) An eye having Myopia:

 

(c) Correction of myopia using a concave lens.

 
 

Science
Lakhmir Chemistry (2020, 2021)
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