The limit of resolution of an instrument

Define limit of resolution of an optical instrument .

The limit of resolution of an optical instrument arises an account of .........

The limit of resolution of an optical instrument arises on account of

How are resolving power and limit of resolution of an optical instrument related ?

A long narrow slit is illuminated by blue light and the diffraction pattern is obtained on a white screen:-What do you mean by limit of resolution of an optical instrument?

The limit of resolution of a microscope with self luminous point objects is