While flying at an altitude of 7.25 km, you look out the window at various objects on the ground. If your ability to distinguish two objects is limited only by diffraction, find the smallest separation between two objects on the ground that you can resolve as distinguishable. Assume your pupil has a diameter of 4.0 mm and take λ = 570 nm.

Question

While flying at an altitude of 7.25 km, you look out the window at various objects on the ground. If your ability to distinguish two objects is limited only by diffraction, find the smallest separation between two objects on the ground that you can resolve as distinguishable.  Assume your pupil has a diameter of 4.0 mm and take λ = 570 nm.