Which of the following is an appropriate condition for a thin lens?

Aperture << Radius of curvature

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Aperture >> Radius of curvature

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Aperture = Radius of curvature

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Aperture is more than the focal length.

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Solution

The correct option is A
Aperture << Radius of curvature

A thin lens is a lens whose aperture is negligible when compared to the radius of curvature of the lens surfaces. Moreover, lesser the radius of curvature, thicker would be the lens for same aperture.

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