Two white point dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately what is the maximum distanceat which thes dots can be resolved by the eye (wave length of light = 500 nm)

Question

$\begin{array}{1 1} 6\;m \\ 3\;m \\ 5\;m \\ 1\;m \end{array} $