A microscope has an objective lens with an aperture diameter of .60 cm where 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 illuminating source were replaced by an violet source of wavelength 420 nm, what would the minimum angle of resolution now become? (1nm= 10^-9m)