If the aperture of a telescope is decreased,the resolving power will:

An astronomical telescope has a large aperture to

According to Abbe,in the formula for the resolving power of a microscope,the numerical aperture is represented by:

Assume that light of wavelength $6000\,\mathring{A}$ is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of $100\,\text{inch}$?

$A$ person is observing a bacteria through a compound microscope. For better analysis and to improve the resolving power,he should:

The diameter of the objective lens of a telescope is $250\, cm$. For light of wavelength $600\, nm$ coming from a distant object, the limit of resolution of the telescope is close to: