Question

real life application of image formation at infinity when kept at focus.... pls answer fast dear​

Answer 1

Answer:

When an object is at infinity,then the rays coming from it is almost parallel to principal axis. Hence the image formed

You cannot see an image formed at infinity unless you go there to look at it. An infinite conjugate image is the same thing as collimated light, or afocal. The rays from a particular field point are parallel to each other rather than converging or diverging as they would for a real or virtual image respectively

I hope it's helpful for you