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Q.
Aperture of the human eye is $2\, mm$. Assuming the mean wavelength of light to be $5000 \,\mathring{A}$, the angular resolution limit of the eye is nearly
Wave Optics
Solution:
If the angular limit of resolution of human eye is $R$ then
$R =\frac{1.22 \lambda}{ a }=\frac{1.22 \times 5 \times 10^{-7}}{2 \times 10^{-3}} rad$
$=\frac{1.22 \times 5 \times 10^{-7}}{2 \times 10^{-3}} \times \frac{180}{\pi} \times 60 \text { minute }=1 \text { minute }$