Question

what is marginal rays​

Answer 1

Explanation:

The ray passing from the centre of the object,at maximum aperature of the lense is called Marginal rays

Answer 2

Answer:

the ray that passes from the center of the object, at the maximum aperture of the lens, is normally known as the marginal ray. It therefore passes through the edge of the aperture stop. Conventionally, this ray is in the y-z plane, usually called the meridian plane.