The objective lenses of two telescope have the same apertures but their focal lengths are in the ration `1 : 2`. Compare the resolving powers of the two telescopes.

For a telescope to have large resolving power the

Two convex lenses of same focal length but of aperture A_(1) and A_(2)(A_(2) lt A_(1)) are used as the objective lenses in two astronomical telescope having identical eye pieces. What is the ratio of their resolving power ? Which telescope will you prefer and why ? Give reason.

Two convex lenses of same focal length but of paerture A_(1) and A_(2)(A_(2) lt A_(1)) are used as the objective lenses in two astronomical telescope having identical eye pieces. What is the ratio of their resolving power ? Which telescope will you prefer and why ? Give reason.

For a telescope to have large resolving power, then the

Two convex lenses of same focal length but of aperture D_1 and D_2(D2 lt D1) ,are used as the objective lenses in two astronomical telescopes having identical eyepieces. what is the ratio of their resolving powers? Which telescope will you prefer and why ? Give reason.

Two convex lenses of same focal length but of aperture A_(1) and (A_(2) lt A_(1)) , are used as the objective lenses in two astronomical telescopes having identical eyepieces. What is the ratio of their resolving power? Which telescope will you prefer and why ? Give reason.

Why should the objective of a telescope have large focal length and large aperture? Justify your answer.