Astigmatism is a defect of eye which can be rectified by using a

(1) Convex lens

(2) Concave lens

(3) Biconevex lens

(4) Cylindrical lens



Astigmatism is a defect of eye which can be rectified by using a (1) Convex lens (2) Concave l..

Answer / guest

( 4 ) Cylindrical lens

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