Question

What is a lens? Write its main types.

Answer 1

Explanation:

A lens can focus light to form an image, unlike a prism, which refracts light without focusing. There are two types of lensesconvex and concave. Convex lenses are lenses that curve outwards, they converge parallel light rays to a focal point. Concave lenses are thinner in the middle and thicker at their edges.

Answer 2

Explanation:

A lens can focus light to form an image, unlike a prism, which refracts light without focusing. There are two types of lensesconvex and concave. Convex lenses are lenses that curve outwards, they converge parallel light rays to a focal point. Concave lenses are thinner in the middle and thicker at their edges.

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