write short information for bi_ concave lens & bi _ convex lens
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Answer:
convex and concave lens
Explanation:
convex lens = It is used to correct long sightedness Or Hypermetropia.
concave lens= It is used to correct short sightedness Or Myopia.
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Answer:
✍A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex.
✍A lens with two concave surfaces is biconcave (or just concave). ... A lens with one convex and one concave side is convex-concave or meniscus.
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