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A microscope has an objective lens with an aperture diameter of .60 cm. A monochromatic light source of wavelength 580 nm is used to illuminate the object. It is determined that the minimum angle of resolution is 1.18 x 10^-4 rad. If the present lens were replaced by one with an aperture of diameter .90cm, what would the minimum angle of resolution now become? (1nm= 10^-9m)

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