Question

The number of cardinal points needed for the construction of an image in the coaxial system of lenses are
(a) eight
(b) six
(c) four
(d) two

Answer 1

six

Hope it helps u^_^

Answer 2

The number of cardinal points needed for the construction of an image in the coaxial system of lenses is six. (option b)

• Cardinal points in a coaxial system consist of focal points and principal points.
• It has two focal points, two nodal points, and two principal points.
• These points are used for the approximation of real optical systems.
• We can say there are three pairs of cardinal points in the coaxial points.
• Coaxial optical system allows the transmitter and receiver optical system to use a common aperture and optical elements with the introduction of the transmitted beam into a small coaxial bond.