Physics, asked by kishornishad3401, 11 months ago

what is focus in Ray optics

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Answered by 1081084

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Explanation:In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. ... A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused.

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