A 4 m telescope can collect a given amount of light in 3 hour.
Under the same observing conditions, how much time would be required for a 8 m telescope to perform the same task?

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06-02-2022
Physics

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A 4 m telescope can collect a given amount of light in 3 hour.
Under the same observing conditions, how much time would be required for a 8 m telescope to perform the same task?

Sagot :

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Alcohen2006idn Alcohen2006idn · Answer 1 · 2022-02-07T00:48:00-05:00

Alcohen2006idn Alcohen2006idn

07-02-2022

The light collection of a telescope is proportional to the AREA of the objective lens or mirror. So the 8m collects 4 times as much light as the 4m does in the same time. Or the bigger one collects the same amount of light in 1/4 of the time that it takes the smaller one.
Under the same observing conditions that the 4m needs 3 hours, the 8m monster can do the job in 45 minutes.

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