In which case does a light ray pass through the centre of a thin lens without deviation?

For a light ray passing through a prism

If a ray passes from air to glass in a spherical glass slab and passes through the centre of the slab without deviation, then the angle of incidence from air to glass at the point on the glass slab is.

The rays passing through the optic centre of a thin lens suffers no lateral displacement.

The rays of light travelling through the optical centre of a lens pass without changing their path. Is it true? justify

Give scientific reasons : The rays of light travelling through the optical centre of a lens pass without changing their path .

If we allow a light ray to pass through the focus, which path does it take ?

How does a light ray behave when it is passed through a lens ?