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Physical Optics/resolution

Hi. Can someone please show me how to do the following problem? Thank you.

"When reading the printout from a laser printer, you are actually looking at an array of tiny dots. If the pupil of your eye is 2.1 mm in diameter when reading a page held 33 cm from your eye, what is the minimum separation of adjacent dots that can be resolved? (Assume light with a wavelength of 540 nm.)"