Question

Resolving power of a telescope increases with
(a) increase in focal length of eye-piece
(b) increase in focal length of objective
(c) increase in aperture of eye piece
(d) increase in apeture of objective

Answer 1

Explanation:

1.where,a is the diameter of the objective lens and amphere is the wavelength of light .thus resolving power of telescope increases wavelength of light decreases.

2.when the frequency of the incident light is increased, the resolving power of the telescope increases......when the focal length of the objective lens is increased ,the resolving power does not change.

4.when the apeture of the objective lens is increased,the resolving power of telescope increases. monochromatic light of wavelength 589nm is incident from air on a surface of water ie.... the speed of the light has decreased when it entered the second medium.

sry I don't know 3rd one