2897, The resolution of the eye is ultimately limited by the pupil

Question

Introduction: 28.97
                        
More Details: The resolution of the eye is ultimately limited by the pupil diameter.What is the smallest diameter spot the eye can produce on the retina if the pupil diameter is 4.45mm ? Assume light with a wavelength of λ= 600 nm . (Note: The distance from the pupil to the retina is 25.4 mm. In addition, the space between the pupil and the retina is filled with a fluid whose index of refraction is  n= 1.336.) d= _________