Question

Angular resolution of naked human eye is

• A. 1'
• B. 1"
• C. 1 /60'
• D. 1/60''

Answer 1

The correct option is C 1 /60'

Several physical factors limit the highest spatial frequencies that can be perceived by the human eye. The diffraction limit of the pupil (based on the finite size of the pupil and the wave nature of light), the spacing of the discrete spacing of the cones on the retina, and physiological tests all agree on a maximum perceived frequency of approximately arc-minute (1/60 of a degree).

So, the correct option is 1/60'.