When diameter of the aperture of the objective of an astronomical telescope is increased, its

The objective of astronomical telescope has

The object of astronomical telescope has

Is the length of the instrument to be changed if the focal length of the objective of an astronomical telescope is increased ?

If the aperture of the objective of a telescope is decreased, then its resolving power

The focal length of objective lens of astronomical telescope is

What is diameter of objective used in astronomical telescope in present use ?

When diameter of objective of an astronomical telescope is doubled, its limit of resolution is