Two luminous point sources separated by a certain distance are at 10 {\km} from an observer. If the aperture of his eye is 2.5 \times 10^{-3} {\m} and the wavelength of light used is 500 {\nm}, the distance of separation between the point sources are just seen to be resolved is

KCET 2009 Physics Solved Paper

Question : 15 of 60

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Two luminous point sources separated by a certain distance are at 10‌km from an observer. If the aperture of his eye is 2.5×10−3m and the wavelength of light used is 500‌nm, the distance of separation between the point sources are just seen to be resolved is

24.4m
2.44m
1.22m
12.2m

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