Question

what is aptical centre of lens​

Answer 1

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The optical centre is defined as the geometric centre of the curved lens . ... Focus :The principal focus is defined as the point on the principal axis where the light rays traveling parallel to the principal axis after refraction actually meet (for a convex lens) or appear to meet (for a concave lens).$<marquee>♥mark as brainliest..✌♥</marquee>$

Answer 2

Optical Centre : The optical centre is defined as the geometric centre of the curved lens . ... Focus :The principal focus is defined as the point on the principal axis where the light rays traveling parallel to the principal axis after refraction actually meet (for a convex lens) or appear to meet (for a concave lens).

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