How will you differentiate between a convex and a concave lens by looking at a printed page?
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(ii) On keeping the lens near a printed page, if the letters appear magnified, then the lens is convex, and if the letters appear diminished,then the lens is concave.hope this is useful
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On keeping the lens near a printed page, if the letters appear magnified, then the lens is convex, and if the letters appear diminished,then the lens is
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