What are thin lenses?

Apparture < Radius of curvature

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Apparture > Radius of curvature

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Apparture = Radius of curvature

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None of these

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Solution

The correct option is A
Apparture < Radius of curvature

A thin lens is a lens with a thickness of the aperture that is negligible compared to the radii of curvature of the lens surfaces.

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