Why the light rays coming from infinity is similar?

1.	Why the light rays coming from infinity is similar?
Answer» We consider\xa0light rays\xa0from\xa0infinity\xa0parallel because they are parallel. ... As the intersection point is pushed further away, the lines become more parallel.\xa0The\xa0object at infinity means\xa0distant\xa0object. The rays falling on the lens from an\xa0object at infinity\xa0are parallel to principal axis.\xa0Object at\xa0infinity\xa0is a fancy way of saying that all the\xa0light\xa0rays coming from the object are parallel(almost) to each other. (Which is practically impossible because the object will emit or reflect\xa0light\xa0in all possible direction).

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