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The aperture diameter of a telescope is 5 m . The separation between the moon and the earth is 4 × 10 5 k m .

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The aperture diameter of a telescope is 5m . The separation between the moon and the earth is 4×10^5km. With light of wavelength of 5500Å, the minimum separation between objects on the surface of moon, so that they are just resolved, is close to:
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correct answer is 60m 

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