Question

The diameter of the eye ball of a normal eye is about 2.5 cm. The power of the eye lens varies from

Answer 1

power of the eye varies from person to person.

Answer 2

Answer:

the answer is here

Explanation:

since ,

we know that power of lens or (p) = 1 by f or focal length .{ when in m} or 100 by f { when in cm }

now we have d= 2.5

so radius = 2.5÷ 2 = 1.25 cm

now we know that f= r ÷ 2

then f = 1.25÷ 2 = 0.625 cm

therefore, p = 100 by 0.625

= 100 × 1000 by 625

= 160 dioptre {ans}