Question: While studying the star Arcturus with a Michelson stellar interferometer the fringes vanished when the two mirrows were 24 ft apart. Assuming light of a

While studying the star Arcturus with a Michelson stellar interferometer the fringes vanished when the two mirrows were 24 ft apart. Assuming light of a mean wavelength of 500 nm, what angle did the star subtend at the Earth? Give your answer in arcseconds.

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