試題詳解

10. A binary star system in the constellation Orion has an angular separation between the two stars of 1.2 × 10^-5radians. If λ = 5 × 10^–7 m, what is the smallest aperture (diameter) telescope that may be used to resolve the two stars?
(A) 10 cm
(B) 5 cm
(C) 50 cm
(D) 1 m
(E) 4 m