Question

what is myopia? list 2 causes for the development of this defect? how can this defect be corrected using a lens? draw ray diagrams to show the image formation in case of 1. defective eye 2. corrected eye

Answer 1

mayopia is shortsightedness .
causes
    esessive curvature of eyelens
    elogation of eyeball
this can be corrected using a cocave lens

Answer 2

it is a defect of vision in which eye cannot see distant objects clearly.

two cause
1.excessive curvature of eye lens.
2.elongation of eye ball.