Which of the following is not a characteristics of a concave lens?

Thick at the edges and thin in the middle.

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Used to correct shortsightedness

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A diverging lens

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Used to correct longsightedness

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Solution

The correct option is D Used to correct longsightedness
We use convex lens to correct long sightedness or hypermetropia, not concave.
Concave lens is a diverging lens and is thick at edge and thin at middle.

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