Explain optical centre of a lens with the help of proper diagram(s)

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Solution

It is point on the principal axis of the lens such that a ray of light passing through this point emerges parallel to its direction of incidence.
It is marked by letter O in the figure. The optical centre is thus the centre of the lens.

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What is the optical centre of a lens?

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Explain optical centre of a lens with the help of proper diagram(s)

It is point on the principal axis of the lens such that a ray of light passing through this point emerges parallel to its direction of incidence.It is marked by letter O in the figure. The optical centre is thus the centre of the lens.

It is point on the principal axis of the lens such that a ray of light passing through this point emerges parallel to its direction of incidence.
It is marked by letter O in the figure. The optical centre is thus the centre of the lens.