with are types of lenses
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Here your answer
There Are Two types of lenses:-
1. concave
2. convex
concave lens-- In this lenses the curve faces inward. Lenses are thinner at the centre, thicker at it's edges.
convex lens-- In this lenses the curve is outward facing. when the light rays pass through the convex lens it converges the light rays and focuses on one point.
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