A microscope has an objective lens with an aperture of diameter 0.60 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 × 10−⁴ rad.If the illuminating source were replaced by a source of wavelength 700 nm,what would the minimum angle of resolution now become? (1 nm = 10−⁹ m) A) 0.58 × 10−⁴ rad B) 1.4 × 10−⁴ rad C) 0.85 × 10−⁴ rad D) 1.2 × 10−⁴ rad

Question

Quizplus · Accepted Answer

The minimum angle of resolution is directly proportional to the wavelength of light. If the wavelength increases from 580 nm to 700 nm, the angle of resolution increases proportionally. Therefore, the new angle of resolution is (700/580) * 1.18 × 10−4 rad = 1.4 × 10−4 rad.

A Microscope Has an Objective Lens with an Aperture of Diameter