The small hole in the middle of the iris is called?

(A) pupil

(B) blood plate

(C) Retina

(D) frontend

Resolution of the eye. You're viewing small objects from a distanceof 2.8m.
A)What's the smallest object you can resolve with light at themiddle of the visible spectrum, \lambda = 550 nm, if the room isbrightly lit, and your pupil diameter is 4.1 mm?
B)What's the smallest object you can resolve with light at themiddle of the visible spectrum, \lambda = 550 nm, if the lightingis dim, and your pupil has expanded to 9.3 mm diameter?

Resolution of the eye. You're viewing small objects from a distanceof 2.8m.
A)What's the smallest object you can resolve with light at themiddle of the visible spectrum, \lambda = 550 nm, if the room isbrightly lit, and your pupil diameter is 4.1 mm?
B)What's the smallest object you can resolve with light at themiddle of the visible spectrum, \lambda = 550 nm, if the lightingis dim, and your pupil has expanded to 9.3 mm diameter?

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 3.46 mm? Assume light with a wavelength 550 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). answer in um.