A lens of large focal length and large aperture is best suited as a...

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A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since:
\( \mathrm{P} \)
(2021)
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(a) a large aperture contributes to the quality and visibility of the images.
(b) a large area of the objective ensures better light gathering power.
(c) a large aperture provides a better resolution.
(d) all of the above.
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