What are resolution and resolving power?

Explanation

(i) Resolution : Resolution is the quality of image which is decided by diffraction effect and Rayleigh criterion.
(ii) Resolution is measured. by the smallest distance which could be seen clearly without the blur due to diffraction.
Resolving power :
The ability of an optical instrument to separate or distinguish small or closely adjacent objects through the image formation is said to be resolving power of the instrument.