The angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A) The photo will seem to show only one star rather than two.
B) The two stars will appear to be touching, looking rather like a small dumbbell.
C) The stars will not show up at all in your photograph.
D) You will see two distinct stars in your photograph.

Question

Quizplus · Accepted Answer

The telescope's angular resolution is not sufficient to distinguish between the two stars, so they will appear as a single point of light.

The Angular Separation of Two Stars Is 0