A question concerning lenses and the resulting images

[gsingh2011]

Imagine a situation where an object is placed infinitely far away from a convex, converging lens such that the light rays that come from the object are parallel to the principal axis. The real image forms at the focal point. In this situation, the magnification is 0, so if a screen was placed at the focal point where the image formed, would no image show up?

 

[NobodySpecial]

Yes but it would be a single point (actually the size would be set by the aberations of the lens) - think of a star