A Microscope Has an Objective Lens with an Aperture Diameter

question 80

Multiple Choice

A microscope has an objective lens with an aperture diameter 0.60 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 *10^-4 rad. If the present lens were replaced by one with an aperture of diameter 1.0 cm, what would the minimum angle of resolution now become? (1 nm = 10^-9 m)

• A) 1.5 *10^-4 rad
• B) 0.79 *10^-4 rad
• C) 0.71 * 10^-4 rad
• D) 1.8 *10^-4 rad

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