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Refraction

How will you ...

Question

How will you distinguish between a convex lens and a concave
lens by holding in hand and looking the printed page through
them.

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Solution

By observing the following properties, it can be easily distinguished between convex and concave lenses

Convex lens -- Bulged at the middle and thin at the edges

Concave lens -- Bulged at the edges and thin at the middle

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