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A binary star system is made up of two stars which are 6.25×10^8 km apart and...

A binary star system is made up of two stars which are 6.25×10^8 km apart and 1050 light years from earth.
a) can you see this system as two stars with a 7.8m visible light telescope? (λ=550nm)
b) can you see this system as two stars with a radio telescope array with an effective diameter of 3000km? (λ=10cm)

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