Two point white does are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? [Take wavelength of light = 500 nm]

Question

Dr. Abubacker · Accepted Answer

(a) We know,
$\frac{y}{D} \geq 1.22\frac{\lambda}{d}$
$\Longrightarrow D \leq \frac{yd}{1.22\lambda}$
$= \frac{10^{- 3} 	imes 3 	imes 10^{- 3}}{1.22 	imes 5 	imes 10^{- 7}}$
$= \frac{30}{6.1} = 5\ m$
$	herefore\ \ D_{\max\ } = 5m$

Q. Two point white does are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? [Take wavelength of light = 500 nm]

Explanation

Reviewed by Dr. Abubacker

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