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

Microscope is an optical instrument which

Angular resolving power of human eye is

The resolving power of electron microscope is

Resolving power of a telescope increases with

What is meant by resolving power of a telescope ?

The ration of resolving powers of an optical microscope for two wavelangths lamda_(1) =4000 Å and lamda_(2)=6000 Å is

Resolving power of a microscope is given by

The ratio of resolving power of an optical microscope for two wavelength lambda_(1)=4000Å and lambda_(2)=6000Å is:

State any one method of increasing the resolving power of an astronomical telescope.

A: Ray optics assumes that light travels in a straight line which is disapproved by diffraction effects, yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. R: Typical sizes of apertures involved in ordinary optical instruments are much larger than the wavelength of light.