Question

how many types of Lens ?​

Answer 1

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✏ANSWER ✍

✨✨There are two main types of lenses, known as convex (or converging) and concave (or diverging).✨✨

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Answer 2

There are two types of lenses:

$\implies$ (i) Convex lens

$\bullet$ A concave lens is made by joining two curved surfaces.

$\bullet$ Ability to diverge a beam of light rays incident on it.

$\implies$ (ii) Concave lens

$\bullet$ A convex lens is made by joining two spherical surfaces.

$\bullet$ Ability to converge incident light rays to a point.