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Assuming human pupil to have a radius of...

Assuming human pupil to have a radius of 0.25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects than human eye can resolve at 500nm wavelength is :

A

`1 mu m`

B

`30 mu m`

C

`100 mu m`

D

`300 mu m`

Text Solution

Verified by Experts

The correct Answer is:
B

Resolving angle of necked eye is given by :
`theta=1.22(lambda)/(D)`
`(y)/(25xx10^(-2))=(1.22xx500xx10^(-9))/(0.25xx2xx10^(-2))`
`y=30xx10^(-6)m=30 mum`
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