Question: As seen from Earth, the red dwarfs Krger 60A and Krger 60B form a binary star system with an angular separation of 2.5 arc seconds.

As seen from Earth, the red dwarfs Krüger 60A and Krüger 60B form a binary star system with an angular separation of 2.5 arc seconds. What is the smallest diameter telescope that could theoretically resolve these stars using 550-nm light?

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