The limit to the eye's visual acuity is related to diffraction by the pupil. D=2.75 mm
dh=1.2 m
a. What is the angle between two just-resolvable points of light for a 2.75 mm diameter pupil in radians, assuming an average wavelength of 550 nm?
b. Take your result to be the practical limit for the eye. What is the greatest possible distance in km a car can be from you if you can resolve its two headlights, given they are 1.2 m apart?
c. What is the distance between two just-resolvable points held at an arm's length (0.800 m) from your eye in mm?

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply.the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a