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Convex lens
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Concave lens
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i.
A convex lens has its surfaces
bulging outward.
ii.
It is thicker in the middle than at
the edges.
iii.
It can form a real image as well as
virtual image.
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i.
A concave lens has its surfaces
curved inward.
ii.
It is thicker at the edges than in
the middle.
iii.
It can form only a virtual image.
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