The diameter of the pupil of human eye is 2.5 mm. Assuming the wavelength of light used is 5000 Å. What must be the minimum distance between two point like objects to be seen clearly if they are at a distance of 5 m from the eye ?

Options

A. `1.22xx10^(-3)m`
B. `1.34xx10^(-3)m`
C. `1.5xx10^(-3)m`
D. `1.6xx10^(-3)m`

Answer

A

Explanation

`x=(1.22 lambdaf)/(D)`
`=(1.22xx5xx10^(-7))/(25xx10^(-4))=1.22xx10^(-3)m`