There is a microscope whose objective's numerical aperture is \( \sin \alpha=0.24 \), where \( \...

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There is a microscope whose objective's numerical aperture is \( \sin \alpha=0.24 \), where \( \alpha \) is the half-angle subtended by the objective's rim. Find the minimum separation resolved by this microscope when an object is illuminated by light with wavelength \( \lambda=0.55 \mu \mathrm{m} \).
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