A binary star system in the constellation Orion has an angular separation between the stars of 4×10?5 radians. Assuming a wavelength of 500 nm, what is the smallest aperture (diameter) telescope that will just resolve the two stars? (1 nm = 10?9 m)
a. 1.2 cm
b. 1.5 mm
c. 1.5 cm
d. 4.8 cm
e. 20 mm
c
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