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Question

Lenses refract light to form images : a .......... lens can from both real and virtual images, but a diverging lens forms only ......... images.

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Solution


Converging lens and diverging lens are one way of classifying lenses based on the behavior of the light affected by the lenses. A converging lens is a lens that converge a beam of light to a point whereas diverging lenses make beams of light diverge from a single point. Converging lens is a type of lens that converge the beams of light from a source. The most common types of converging lenses are the Plano-convex and biconvex lenses. Both of these lenses are basic lens elements.

Diverging lens is a type of lens that diverge the beams of light from a source. For a thin beam of light which is collimated (parallel) and travelling on the optical axis of the lens, the lens diverge the beam of light which appears to come out from a point between the lens and the object.

Converging lens converge light beams from a source whereas diverging lenses diverge light rays from a source.

Most common types of converging lenses are Plano-convex, biconvex and positive meniscus lenses.

Most common types of diverging lenses are Plano-concave negative meniscus and biconcave lenses.


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