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Define the term optical centre |
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Answer» The optical centres of a lens is a point on the principal axis of lens , such that a ray of light passing through it goes undeviated........?? Optical centre is the centre of lens on aperture just like pole in mirror. Optical centre: It is the geometrical centre of the lens.Radius of curvature: It is the radius of the sphere of which the surface of the lens is part of.Focal length: It is the distance between the optical centre and the principal focus of a lens. Mid point of lens |
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