Will always the rays coming from infinity parallel to the principal axis?

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Solution

No, they are not always parallel to principal axis.The Rays coming from an object atinfinity are parallel to each other but not necessarily parallel to principal axis.

In reality, light rays are never perfectly parallelbecause the distance to their source point is always a finite distance. ... So, in theory, if the distance traveled is approximately infinite, and the separation of the rays is close to zero, then we can call them parallel.

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Q. Assertion :Position of image approaches focus of a lens, only when object approaches infinity. Reason: Paraxial rays incident parallel to principal axis intersect at the focus after refraction from lens.

Rays parallel to the principal axis of a concave or convex mirror meet or appear to come from which point?

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