What is the resolving power of an instrument?

What is the resolving power of human eye.

What is meant by the resolving power of an optical instrument?

How does diffraction limit the resolving power of an optical instrument?

How does diffraction limit the resolving power of an optical instrument?

How is resolving power of an optical instrument related to wavelength of light ?

Assertion: Diffraction limits the resolving power of an optical instrument. Reason: In diffraction, the fringes of minimum intensity are perfectly dark.