1.

The aperture of the largest telescope in the world is about 5 m. If the sepration between the moon and the earth is 4 xx 10^5km and the wavelength of visible light is 5000 A, then the minimum separation between the objects on the surface of the moon which can be just resolved is approximately equal to :

Answer»

200 m
100 m
50 m
25 m

Answer :C


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