1.

Why ray of light passing through optical centre goes undeviated?

Answer» It is there the normal
Because when the rays passes through optical centre it can be observed A thin lenses .And in thin lenses the perpendicular distance between extended incident rays and extended emergent ray is negligible.So, we can say that light passing through optical centre goes undeclared.
In thin lenses the perpendicular distance between extended incident ray and extended emergent ray is negligible.


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