Which statement about a diverging lens is not correct?
A ray of light parallel to the principal axis is refracted such that it appears to diverge from the principal focus.
A ray of light passing through the optical center of the lens is refracted through the principal focus on the opposite side.
The distance between the center of the lens and the principal focus is the focal length.
The lens is thinner in the middle than at the edges.
56 exam-style questions on CIE IGCSE Physics 3.2.3a Converging and diverging lenses. Each one has a worked solution and a mark scheme showing where the marks go.