This is the only question i'm struggling on. 20 points! the products of a neutralisation reaction are more acidic than the reactants more concentrated than the reactants more basic than the reactants closer to a ph of 7 than the reactants

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?