Jane likes to sunbathe
she has read about risks from sunbathing and how to reduce them.
she thinks she is not at risk from sunbathing because she has dark skin.
explain why jane is not completely correct

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?