Question

The diameter of eye is 2.5cm. Find the power of accomodation of eye.

Answer 1

As diameter of eye lens is 2.5. Hence the radius R = 2.5/2 = 1.25 cm

Now, focal length f = R/2

Here, R = 1.25 cm

Therefore,  f = 1.25/2 = 0.625 cm

Now, Power P = 1/f

                        =1/0.625

                         =1.6 Dioptre

Hence power of eye is 1.6 D