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Why does the objective lens of an astronomical telescope have a large light gathering power?

 
The Human Eye and Colourful World
Last Post by Kinjal ray 5 years ago
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04/12/2020 10:10 am
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Tulika pia
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Why does the objective lens of an astronomical telescope have a large light-gathering power?

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04/12/2020 10:11 am
Kinjal ray
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The objective lens of a telescope has a large aperture to have a large light gathering power.

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