a person is not able to see if a book is kept closer than 40 cm of his eyes state the defect of the I give its causes and correction draw the diagram we calculate the focal length and power of connective lens required
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Hypermetropia.
This defect arises because of
. the focal length of the eye is too long.
.the eyeball has become too small
This can be corrected by using convex lens.
This defect arises because of
. the focal length of the eye is too long.
.the eyeball has become too small
This can be corrected by using convex lens.
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