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.

Explanation

As resolving power is directly proportional to the aperature and `A_(1) gt A_(2)`.
`"Thus "((R.P)_(1))/((R.P)_(2))=(A_(1))/(A_(2)) gt 1`