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Two convex lenses of same focal length b...

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.

Text Solution

Verified by Experts

Ratio of resolving power ` = ( A_(1))/( A_(2))`
Telescope of aperture `A_(1)` is preferred
Reason `:`
Higher resolving power `//` More light gathering power.
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