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Eye is most senstive to light of wavelen...

Eye is most senstive to light of wavelenght 5550Å. If the diamter of the pupil is about `2.4 mm`, the angular limit of resolution of eye will be

A

`1^(@)'`

B

`1'`

C

`1''`

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
`lamda=5500Å,D=2.4mm,theta=?`
`theta=(1.22lamda)/(D)`
`=(1.22xx5.5xx10^(-7))/(24xx10^(-3))` rad
`=(1.22xx5.5xx10^(-7)xx60xx60)/(2.4xx10^(-3))min`
=1 min
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