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Two point white dots are 1 ~mm apart on a black paper. They are viewed by eye of pupil diameter 3 ~mm . Approximately, what is the maximum distance at which these dots can be resolved by the eye? [ Take wavelength of light =500 ~nm ]

Options

  1. A5 ~m
  2. B1 ~m
  3. C6 ~m
  4. D3 ~m

Correct answer

A. 5 ~m

Step-by-step solution

1.22 (3 ~mm ) = Re solution limit = (1 ~mm ) R R =5 ~m

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