Question

effect play an important role in case of resolving power of optical instrument​

Answer 1

Explanation:

LIMIT OF RESOLUTION OF OPTICAL INSTRUMENTS - DEFINITION

In determining the limit of resolution of optical instruments like a telescope or a microscope, for the two stars to be just resolved,

fΔθ≈r0≈a0.61λf

implying Δθ≈a0.61λ

Thus Δθ will be small if the diameter of the objective is large. This implies that the telescope will have better resolving power if a is large. It is for this reason that for better resolution, a telescope must have a large diameter objective

Answer 2

The wavelength of light, refractive index and angular aperture are the significant factors that affect the resolving power of the optical instrument.

• The resolving power of Optical Instruments is as follows: A quantity that characterizes the ability of optical instruments to elicit distinct images of two points of an object that are intimate to each other.
• Optic instrument elicits different images of two nearly objects. The plane swells from each source after ratifying through an orifice from the diffraction pattern traits of the orifice. It is the lapping of diffraction structures constructed by two sources that set a hypothetical upper limit to the resolving power. 
• The resolving power of optical instruments is the most significant feature of the optical system and affects the ability to differentiate between fine features of a particular specimen.