what is myopia ??state the two causes of myopia with the help of labelled ray diagram show the eye defect myopia.
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Cause of myopia: This defect arises due to either of the following two reasons: (i) The eyeball gets elongated along its axis so that the distance between the eyelens and the retina becomes larger. (ii) Due to excessive curvature of the cornea, the focal length of the eyelens becomes too small.
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Human Eye and Colourful World
Make a ray diagram to show how the eye defect myopia is corrected by using a suitable lens. The ray diagram below shows the myopic defect and it's correction method. Concave lens is used for the correction of myopia.
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