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You have been asked to compare four proposals
for telescopes to be placed in orbit above the blurring effects of the earth’s atmosphere. Rank
the proposed telescopes in order of their ability to resolve small details, from best to worst. (i) A radio
telescope 100 m in diameter observing at a wavelength of 21 cm; (ii) an optical telescope 2.0 m in diameter
observing at a wavelength of 500 nm; (iii) an ultraviolet telescope 1.0 m in diameter observing at a
wavelength of 100 nm; (iv) an infrared telescope 2.0 m in diameter observing at a wavelength of 10 mm.
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