Question

centre of curvature of cornea and two surface of the length are all on the slight line known as___​

Answer 1

Answer:

Optical axis, the straight line passing through the geometrical centre of a lens and joining the two centres of curvature of its surfaces.

Answer 2

$\mathfrak\green{Answer \ ♡ \ :-}$

Optical axis, the straight line passing through the geometrical centre of a lens and joining the two centres of curvature of its surfaces.

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$\large{\boxed{\boxed{\rm{More \ about \ optical \ axis : - }}}}$

• An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens, microscope or telescopic sight.

• The optical axis is an imaginary line that defines the path along which light propagates through the system, up to first approximation.