Question

You are given that the diameter of the eyeball is about 2.3 cm and a normal eye can adjust the focal length of its eye lens to see objects situated anywhere from 25 cm to an infinite distance away from it. (a) What is the power of the (normal) eye lens, when ciliary muscles are fully relaxed? (b) What is the power of the (normal) eye lens, when ciliary muscles are in their maximum contract position? (c) The maximum variation in the power of the eye lens, when it adjust itself, from the normal relaxed position to the position where the eye can see the nearby object clearly?

Answer 1

it is not correct answer is 25cm for normal eye