The resolution of a telescope is ultimately limited by the diameterof its objective lens or mirror. An amateur astronomer's telescopehas a 5.2 in. diameter mirror. (TakeThe resolution of a telescope is ultimately limite to be542 nm, near the center of the visiblespectrum.)
(a) What is the minimum angular separation (inarc seconds) of two stars that can be resolved with the5.2 in. scope?

(b) What is the minimum distance (in km) between two points on theMoon's surface that can be resolved by the 5.2 in. scope? (Note: The average distance fromEarth to the Moon is 384,400 km.)


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