give your opinion about the radius of curvature of a concave lens having different F1 and F2 what would the lens called having equal F1 and F2
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The sides of a lens having different focus look differently curved when seen from a side ; ),while it looks symmetric if it has equal foci.
If F1 is greater than f2, the image will be farther away from the optic center than if they were equal,same for the other way round.
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